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In this manuscript, we have developed an efficient spraying method to successfully fabricate a series of flower-like coordination polymers (CP) microparticles, including Co/BDC (1,4-benzenedicarboxylate) metal organic frameworks (MOF) and infinite coordination polymers (ICP) microparticles, as well as Ni-Co/BDC MOF and Zn/DOBDC (2,5-dioxido-1,4-benzenedicarboxylate) MOF. The spraying method has shown high efficiency and universality in synthesizing the flower-like CP. The crystalline structure can be adjusted by varying the solvent composition in the spraying process. SEM observation demonstrated the MOF and ICP microparticles possess the similar flower-like structure, which is composed of nanoflakes with smooth surface, and the flower-like microparticles could be monodisperse with as low as 5% polydispersity. Moreover, the fabrication of the flower-like CP microparticles by spraying has a wide operation window, because there is no need to precisely control the experiment conditions, like solvents, concentration, and spray order. Due to the practicality of spray technique, this work would pave the way for the manufacture of the flower-like materials and have great potential in applications of catalysis, sensor, energy storage, and so on.

In this manuscript, we have developed an efficient spraying method to successfully fabricate a series of flower-like coordination polymers (CP) microparticles, including Co/BDC (1,4-benzenedicarboxylate) metal organic frameworks (MOF) and infinite coordination polymers (ICP) microparticles, as well as Ni-Co/BDC MOF and Zn/DOBDC (2,5-dioxido-1,4-benzenedicarboxylate) MOF. The spraying method has shown high efficiency and universality in synthesizing the flower-like CP. The crystalline structure can be adjusted by varying the solvent composition in the spraying process. SEM observation demonstrated the MOF and ICP microparticles possess the similar flower-like structure, which is composed of nanoflakes with smooth surface, and the flower-like microparticles could be monodisperse with as low as 5% polydispersity. Moreover, the fabrication of the flower-like CP microparticles by spraying has a wide operation window, because there is no need to precisely control the experiment conditions, like solvents, concentration, and spray order. Due to the practicality of spray technique, this work would pave the way for the manufacture of the flower-like materials and have great potential in applications of catalysis, sensor, energy storage, and so on., Competing Interests: The authors declare no conflict of interest. The founding sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results.

Carbon disulfide (CS2) is a highly volatile neurotoxic species. It is known to cause atherosclerosis and coronary artery disease and contributes significantly to sulfur-based pollutants. Therefore, effective detection and capture of carbon disulfide represents an important aspect of research efforts for the protection of human and environmental health. In this study, we report the synthesis and characterization of two strongly luminescent and robust isoreticular metal organic frameworks (MOFs) Zr6(µ3-O)4(OH)8(tcbpe)2(H2O)4 (here termed 1) and Zr6(µ3-O)4(OH)8(tcbpe-f)2(H2O)4 (here termed 2) and their use as fluorescent sensors for the detection of carbon disulfide. Both MOFs demonstrate a calorimetric bathochromic shift in the optical bandgap and strong luminescence quenching upon exposure to carbon disulfide. The interactions between carbon disulfide and the frameworks are analyzed by in-situ infrared spectroscopy and computational modelling by density functional theory. These results reveal that both the Zr metal node and organic ligand act as the preferential binding sites and interact strongly with carbon disulfide.

Series of mixed-ligand coordination polymers (CP) and metal–organic frameworks (MOFs) based on bulky 9,10-di(1H-imidazol-1-yl)anthracene (dia) were synthesized from aqueous solutions even with very short (<10 min) reaction times. Two different metals (M = Cu, Ni) and three different secondary ligands were used to generate six new structures: [Cu2(dia)2(5-aip)2]·6H2O (1), [Ni2(dia)2(5-aip)2]·5H2O (2), [Cu2(dia)2(2-ata)2]·4H2O (3), [Ni(dia)(2-ata)·Ni(dia)2(2-ata)]·2.5H2O (4), [Cu8(dia)2(5-sip)4(OH)4] (5) and [Ni3(dia)5(5-sip)2]·6DMF·14H2O (6). Structure analyses involving single-crystal X-ray diffraction (SCXRD), powder X-ray diffraction (PXRD) and Fourier-transform infrared spectroscopy (FT-IR) were conducted along with studies determining the thermal stabilities and optical properties of the compounds. The results indicate that the developed fast and green syntheses can produce pure CP and MOF phases that have various thermally stable and visible light absorbing structures which may find applications in photocatalysis. [ABSTRACT FROM AUTHOR]

Five compounds, [Zn2(bpe)(BPTA)2(H2O)2] ⋅ 2H2O (1); [Zn(bpe)(BPTA)] (2); [Cd(bpe)(BPTA)H2O] (3); [Cd(BPTA) (bpmh)] ⋅ 2H2O (4); and Cu2(BPTA)2(bpmh)3(H2O)2] ⋅ 2H2O (5) were prepared employing 2,5‐bis(prop‐2‐yn‐1‐yloxy)terephthalic acid (2, 5 BPTA) as the primary ligand and 1,2‐di(pyridin‐4‐yl)ethane (4, 4′ bpe) (1–3) and 1,2‐bis(pyridin‐3‐ylmethylene)hydrazine (bpmh) (4–5) as the secondary ligands. Single crystal studies indicated that the compounds 1, 3 and 5 have two‐dimensional layer structures and compounds 2 and 4 three‐dimensional structures. The luminescence behaviour of the compounds 2 and 3 were explored for the sensing of metronidazole in aqueous medium. The studies indicated that the compounds can detect metronidazole in ppm level both in solution as well as simple paper strips. The Cu compound 5 was found to lose the coordinated water molecule at 100 °C without any structural change. The coordinatively unsaturated Cu‐centre were examined towards the Lewis acidic character by carrying out the Ullmann type C−C homocoupling reaction of the aromatic halide compounds. The compounds, 4 and 5, also have the Lewis basic functionality arising out the =N−N=, aza groups. The bifunctional nature of the coordination polymers (CP) was explored towards the Chan‐Lam coupling reaction between phenyl boronic acid and aniline derivatives in the ethanol medium. In both the catalytic reactions, good yields and recyclability were observed. The present studies illustrated the rich diversity that the transition metal containing compounds exhibit in extended framework structures. [ABSTRACT FROM AUTHOR]

For the rapid detection of ascorbic acid (AA) and Cr(VI), three novel 2D coordination polymers (CP) with different metal centers [Co(L)(5-NIPA)(H2O)]·H2O (1), [Ni(L)(5-NIPA)(H2O)]·H2O (2) and [Cu(L)(5-NIPA)]·H2O (3) were synthesized by the traditionally hydrothermal method (L = N,N′-bis(pyridine-3-ylmethyl)-4-(4-carboxybenzyl)oxybenzamide, 5-NIPA = 5-nitroisophthalic acid). CPs 1 and 2 are isomorphic 2D regular (4,4)-connected networks, and CP 3 has a twisted 2D lamellar structure. All of the above complexes present highly sensitive and selective electrocatalytic sensing performances for AA and Cr(VI). The detection limits of the three complexes were 0.320, 3.360 and 3.600 μM for AA, and 0.2349, 0.9928 and 3.6054 μM for Cr(VI), respectively. [ABSTRACT FROM AUTHOR]

By combining isoquinoline‐5‐carboxilic acid with Cu(II) ions under several different conditions, we were able to obtain novel metallorganic materials, among which two 2D coordination polymers, CP 1 and CP 2 which were also characterized by SC‐XRD. Ratio of solvents (EtOH : DMF) in the mixture employed during their synthesis has a marked effect in selecting the formation of one species or the other, which basically differ in the coordination at the Cu(II) center due to k1/k2 denticity of the carboxylate ligands. [ABSTRACT FROM AUTHOR]

Coordination polymers (CP) and metal-organic frameworks (MOF) have become a topic of immense interest in this century primarily because of the structural diversity that they offer. This structural diversity results in their multifaceted utility in various fields of science and technology such as catalysis, medicine, gas storage or separation, conductivity and magnetism. Their utility inspires a large variety of scientists to engage with them in their scientific pursuit thus creating a buzz around them in the scientific community. Metals capable of forming CPs and MOFs are primarily transition metals. Among them vanadium-based CPs and MOFs demand detailed discussion because of the unique nature of vanadium which makes it stable in many oxidation states and coordination number. Vanadium's versatility imparts additional structural marvel and usefulness to these CPs and MOFs. [ABSTRACT FROM AUTHOR]

The inhibition potential of two new 1D coordination polymers (CP), CuL2(NO3)2 (C1) and ZnL2(BF4)2 (C2), and their cryptate-bis(1H-1,2,4-triazole)-based ligand (L1) against the corrosion of mild steel (MS) in molar hydrochloric acid medium was evaluated by employing the weight loss (WL), potentiodynamic polarization (PDP), and electrochemical impedance spectroscopy (EIS) techniques. In addition, scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM–EDS) was used to assess the surface of the steel before and after corrosion. UV–visible spectroscopy was used to examine the gravimetric solution, and to fully understand the inhibitory effect, we employed quantum chemical descriptors and Monte Carlo simulation. Based on the outcomes of the electrochemical and computational research, combined with characterization of the metal surface morphology, both metal complexes were found to be highly effective compared to the parent ligand. The findings of the EIS measurements showed that at 308 K, complexes C1 and C2 retained their inhibitory efficiency at levels over 92.3%. Furthermore, these compounds are of the mixed type, and their adsorption on the MS face was found to follow the Langmuir adsorption isotherm with the free energies of adsorption of − 42.3 and − 46.2 kJ mol−1, respectively. The experimental findings were reinforced by quantum computations and computer simulation. [ABSTRACT FROM AUTHOR]

Multifunctional drug delivery systems (DDS) are in high demand for effectively targeting specific cells, necessitating excellent biocompatibility, precise release mechanisms, and sustained release capabilities. The hollow multishelled structure (HoMS) presents a promising solution, integrating structural and compositional design for efficient DDS development amidst complex cellular environments. Herein, starting from a Fe‐based metal‐organic framework (MOF), amorphous coordination polymers (CP) composited HoMS with controlled shell numbers are fabricated by balancing the rate of MOF decomposition and shell formation. Fe‐CP HoMS loaded with DOX is utilized for synergistic chemotherapy and chemodynamic therapy, offering excellent responsive drug release capability (excellent pH‐triggered drug release 82% within 72 h at pH 5.0 solution with doxorubicin (DOX) loading capacity of 284 mg g−1). In addition to its potent chemotherapy attributes, Fe‐CP‐HoMS possesses chemodynamic therapy potential by continuously catalyzing H2O2 to generate ·OH species within cancer cells, thus effectively inhibiting cancer cell proliferation. DOX@3S‐Fe‐CP‐HoMS, at a concentration of 12.5 µg mL−1, demonstrates significant inhibitory effects on cancer cells while maintaining minimal cytotoxicity toward normal cells. It is envisioned that CP‐HoMS could serve as an effective and biocompatible platform for the advancement of intelligent drug delivery systems in the realm of cancer therapy. [ABSTRACT FROM AUTHOR]

Lead halide hybrids have shown great potentials in CO2 photoreduction, but challenging to afford C2+ reduced products, especially using H2O as the reductant. This is largely due to the trade‐off problem between instability of the benchmark 3D structures and low carrier mobility of quasi‐2D analogues. Herein, the lead halide dimensionality of robust coordination polymers (CP) was modulated by organic ligands differing in a single‐atom change (NH vs. CH2), in which the NH groups coordinate with interlamellar [PbI2] clusters to achieve the important 2D→3D transition. This first CP based on 3D cationic lead iodide sublattice possesses both high aqueous stability and a low exciton binding energy of 25 meV that is on the level of ambient thermal energy, achieving artificial photosynthesis of C2H5OH. Photophysical studies combined with theoretical calculations suggest the bridging [PbI2] clusters in the 3D structure not only results in enhanced carrier transport, but also promotes the intrinsic charge polarization to facilitate the C−C coupling. With trace loading of Rh cocatalyst, the apparent quantum efficiency of the 3D CP reaches 1.4 % at 400 nm with a high C2H5OH selectivity of 89.4 % (product basis), which presents one of the best photocatalysts for C2 products to date. [ABSTRACT FROM AUTHOR]

A new class of lanthanide mixed‐carboxylate ligands compounds with formula {[Ln2(phthgly)4(bdc)(H2O)6]·(H2O)4}∞, labelled as Ln3+: Eu (1) and Gd (2) coordination polymers (CP) were synthesized under mild reaction conditions between lanthanide nitrate salts and a solution of N‐phthaloylglycine (phthgly) and terephthalic (bdc) ligands. The (1) and (2) coordination polymers were formed by symmetric binuclear units, in which phthgly and bdc carboxylate ligands are coordinated to the lanthanide ions by different coordination modes. Surprisingly, all organic ligands participate in hydrogen bonding interactions, forming an extremally rigid crystalline structure. The red narrow emission bands from the 5D0→7FJ transitions of the Eu3+ ion show a high colour purity. The intramolecular energy transfer process from L→Eu3+ ion has been discussed. The experimental intensity parameters (Ω2,4) reflect lower angular distortion and polarizability of the chemical environment around the metal ion compared with other Eu3+ compounds reported in the literature. This novel class of coordination polymer offers a more attractive platform for developing luminescent functional materials for different applications. [ABSTRACT FROM AUTHOR]

We report the synthesis, characterization and properties of a series of coordination polymers (CP) in which paddle‐wheel diruthenium (II,II) tetracarboxylate units are linked by tetrazine as axial ligand, a combination aimed to promote electron delocalization along the CP axis. The use of bulky equatorial 3,4,5‐tri(alkoxy)benzoates (B3OCn, n=10, 14, 18) warranted the columnar liquid crystalline nature of the targeted Ru2(B3OCn)4tz CP, which allowed their processing as extruded fibers. The liquid crystalline phases of both the polymers and their Ru2(B3OCn)4 precursors have been studied by means of polarized optical microscopy, differential scanning calorimetry, X‐ray diffraction and small and wide angle X‐ray scattering. We suggest herein some models for the supramolecular organization in the hexagonal and rectangular columnar mesophases these CP exhibited. Extrusion form the CLC phase lead to fibers in which the columnar axes were colinear with the fiber axis at a macroscopic scale. Electrical conductivity measurements on these fibers revealed high values (0.4 S/m) for the targeted CP. [ABSTRACT FROM AUTHOR]

Metal‐organic coordination polymers (CP) have attracted the scientific attention for electrochemical water oxidation as it has the similar coordination structure like natural photosynthetic coordinated complex. However, the harsh synthesis conditions and bulky nature pose a major challenge in the field of catalysis. Herein, 3–5 nm CP particles synthesized at room temperature using aqueous solutions of Ni2+/Cu2+ and 2,5‐dihydroxyterepthalic acid as precursor were applied for alkaline water and urea electrolysis. The overpotential required is only 300 mV at 10 mA cm−2 by Nano‐Ni CP for water oxidation, with turnover frequency (TOF) of 21.4 s−1 which is around 8 times higher than its bulk‐counterpart. Overall water and urea splitting were achieved with Nano‐Cu (−) ∥ Nano‐Ni (+) couple on Ni foam at 1.69 and 1.52 V to achieve 10 mA cm−2, respectively. High electrochemical surface area (ECSA), high TOF, and enhanced mass diffusion are found to be the key parameters responsible for the state‐of‐the‐art water and urea splitting performances of nano‐CPs as compared to their bulk counterparts. [ABSTRACT FROM AUTHOR]

By using an anion-directed synthesis approach, two new Gd(III)-based coordination polymers (CP) {[Gd2(HL)2(C2O4)(H2O)2] 2H2O}n (1) and [Gd(HL)(SO4)]n (2) have been successfully prepared by hydrothermal reaction of the GdO with the 1H-benzimidazole-5,6-dicarboxylic acid (H3L) ligand in the presence of different acid ligands. Furthermore, their inhibitory effect on cardiac myoma cells was evaluated. Firstly, the Cell Counting Kit-8 assay was performed to explore the inhibitory effect of complexes on cancer cell viability and proliferation. The transwell assay was conducted to evaluate the influence of the compounds on cell migration and invasion ability. In addition to this, the flow cytometry was carried out for the cancer cell apoptosis evaluation after compounds treatment. [ABSTRACT FROM AUTHOR]

Four indium‐based, 2D coordination polymers (CP) were synthesized utilizing InCl3 and InI3 and the bidentate ligands 4,4'‐bipyridine (bipy), 1,2‐di(4‐pyridyl)ethylene (bpe) and 1,2‐di(4‐pyridyl)ethane (bpa). The isoreticular networks ∞2 [In2Cl6(bipy)] (1) and ∞2 [In2Cl6(bpe)] (2) are constituted by chloride‐ and ligand‐bridged octahedra with a honeycomb like (6,3)‐net topology (hcb topology). In contrast, ∞2 [(In4Cl12)(bpa)3] (3) consists of {In4Cl12N6} units, with each indium atom being coordinated by chloride anions and bpa ligands in an octahedral fashion. Bpa ligands connect indium atoms in two dimensions, forming a semi‐regular uninodal 3‐c net with the point symbol (4,82), as present in the fes topology. In ∞2 [(InI3)2(bpa)3] (4), indium is coordinated by three iodide and three bpa ligands in a meridional fashion. In contrast to ∞2 [In2Cl6(bipy)] (1) and ∞2 [In2Cl6(bpe)] (2), the indium‐centered octahedra are linked by the bidentate linker only, but also a honeycomb‐like, zigzag‐shaped (6,3)‐net with a hcb topology is formed. The CPs were investigated by SCXRD, PXRD, IR‐spectroscopy, and with DTA/TG regarding their thermal properties. [ABSTRACT FROM AUTHOR]

Herein, we report the magnetic and photoluminescence characterization of coordination polymers (CP) built from the combination of lanthanide(III) ions, pyrimidine-4,6-dicarboxylate (pmdc) ligand and a co-ligand with formula {[Dy(μ-pmdc)(μ-ox)0.5(H2O)3]•2H2O}n (1-Dy), {[Dy(μ3- pmdc)(μ-ox)0.5(H2O)2] ~2.33H2O}n (2-Dy), {[Dy2(μ3-pmdc)(μ4-pmdc)(μ-ox)(H2O)3]•5H2O}n (3-Dy), {[Ln(μ3-pmdc)(μ-ox)0.5(H2O)2]•H2O}n (where Ln(III) = Nd (4-Nd), Sm (4-Sm), Eu (4-Eu) and Dy (4-Dy)) and {[Dy(μ4-pmdc)(NO3)(H2O)]•H2O}n (5-Dy). It must be noted the presence of oxalate anion acting as ditopic co-ligand in compounds 1-Dy, 2-Dy, 3-Dy and 4-Ln, whereas in 5-Dy the nitrate anion plays the role of terminal co-ligand. Direct current measurements carried out for the dysprosium-based CPs reveal almost negligible interactions between Dy3+ ions within the crystal structure, which is confirmed by computed values of the exchange parameters J. In addition, alternating current measurements show field-induced single-molecule magnet (SMM) behavior in compounds 1-Dy, 2-Dy, 4-Dy and 5-Dy, whereas slight-frequency dependence is also observed in 3-Dy. Solid state emission spectra performed at room temperature for those compounds emitting in visible region confirm the occurrence of significant ligand-to-lanthanide charge transfer in view of the strong characteristic emissions for all lanthanide ions. Emission decay curves were also recorded to estimate the emission lifetimes for the reported compounds, in addition to the absolute quantum yields. Among them, the high quantum yield of 25.0% measured for 4-Eu is to be highlighted as a representative example of the good emissive properties of the materials. [ABSTRACT FROM AUTHOR]

Four isotypic one‐dimensional coordination polymers (CP) were synthesized using the group 13 metal halides AlBr3, GaCl3, GaBr3, and InI3 and the tridentate ligand 2,4,6‐tri(4‐pyridyl)‐1,3,5‐triazine (tpt) serving as bidentate linker. The neutral one‐dimensional CPs 1∞[AlBr3(tpt)], 1∞[GaCl3(tpt)], 1∞[GaBr3(tpt)], and 1∞[InI3(tpt)] are constituted by zigzag‐shaped chains in the crystal structure, in which one coordination site of the tpt ligand remains uncoordinated. All CPs were characterized by SCXRD, PXRD, simultaneous DTA/TG, elemental‐analysis and IR spectroscopy. Furthermore, three complexes of the composition [(AlBr3)3(tpt)], [(GaCl3)3(tpt)], and [(GaBr3)3(tpt)] were structurally characterized by SCXRD, being preliminary and side products of the formation of the coordination polymers. [ABSTRACT FROM AUTHOR]

A protonated form of 1,2-bis(4-pyridyl)ethylene (HBpe+), produced through proton transfer or pH adjustments, plays a significant role in forming unique supramolecular structures. In contrast, non-protonated forms of the molecule (Bpe) are extensively studied in metal-organic complexes. In this review, we examine the fascinating world of HBpe+ as a monodentate ligand in the realm of coordination chemistry. It discusses how protonated ligands influence the assembly of supramolecular structures, as well as their properties and functions. Structures such as 1:1 adduct, coordination polymers, and metal clusters are often formed as a result. In these assemblies, HBpe+ engages in a variety of interactions that influence its supramolecular behavior. The interactions include coordination complexes with metal ions, hydrogen bonds, aromatic ring stacking, and double bond stacking (π⋯π stacking). The flexibility and conformation of the ligand have a significant impact on the overall structure and stability of complexes. It opens the door to developing functional materials by unraveling the unique attributes and role of HBpe+ in supramolecular assembly. With these insights, it is possible to explore the functional properties of HBpe+ through controlled assembly processes in order to create innovative and functional materials. [ABSTRACT FROM AUTHOR]

Back Cover: Coordination Polymer Glasses with Lava and Healing Ability for High-Performance Gas Sieving (Angew. Keywords: coordination polymers; CP glass; healing; membrane separation; molecular sieving EN coordination polymers CP glass healing membrane separation molecular sieving 21596 21596 1 09/16/21 20210920 NES 210920 B Self-healing gas separation membranes b based on coordination polymers (CPs) are reported by Xiao Feng, Bo Wang, and co-workers in their Research Article on page 21304. Coordination polymers, CP glass, healing, membrane separation, molecular sieving. [Extracted from the article]

Keywords: coordination polymers; CP glass; healing; membrane separation; molecular sieving EN coordination polymers CP glass healing membrane separation molecular sieving 21764 21764 1 09/16/21 20210920 NES 210920 B Selbstheilende Gastrennmembranen b auf Basis von Koordinationspolymeren (CPs) werden im Forschungsartikel auf S. 21474 von Xiao Feng, Bo Wang et al. vorgestellt. Rücktitelbild: Coordination Polymer Glasses with Lava and Healing Ability for High-Performance Gas Sieving (Angew. Coordination polymers, CP glass, healing, membrane separation, molecular sieving. [Extracted from the article]

The reactions of an unexploited N,N′‐5‐carboxyl‐1,3‐phenylenebis(ethyl oxamate) (HEt2L) ligand with different Mn2+ and Cd2+ salts under solvothermal conditions afforded four three‐dimensional (3D) coordination polymers (CPs): [Mn1.5L(H2O)2]⋅H2O (1) [Mn2L(C2O4)0.5(NMP)(H2O)] ⋅ NMP (2), [Cd1.5L(H2O)2.5] ⋅ H2O (3) and [Cd2L(C2O4)0.5(H2O)3] ⋅ H2O (4) (NMP=N‐methyl pyrrolidone). L, generated by the in‐situ hydrolysis of HEt2L, displays four kinds of coordinating modes through oxamate and carboxylate groups as well as different syn‐syn and syn‐trans configurations. The resulting novel (3,4,5)‐, (3,4,6)‐, (4,5)‐ and (4,4,4,5)‐connected topologies for 1–4 were formed. Among them, 1 has interesting 1D metal‐oxamate zigzag chains, 2 contains 1D channels with a free void of 52.5 %, 3 consists of an unprecedented Cd‐oxamate layer, 4 has a novel Cd‐oxamate‐oxalate chain. The antiferromagnetic interactions of 1 and 2 were observed, meanwhile 3 and 4 exhibit solid‐state luminescence with the maximum emission bands at 483 and 479 nm, respectively, under an excitation of 332 nm. Structural Diversity: Four novel coordination polymers (CP) were constructed by Mn2+ and Cd2+ ions with N,N′‐5‐carboxyl‐1,3‐phenylenebis (oxamic acid), showing framework diversity caused by various ligand coordinating modes (See figure). In addition, antiferromagnetic interactions and exhibit solid‐state luminescence properties were investigated. [ABSTRACT FROM AUTHOR]

Lung cancer is one of the most common cancers with high incidence and mortality rates. Despite improvements in survival with combined surgical and chemotherapy interventions, prognosis remains poor. Hence, the development of effective drug delivery systems is crucial for improving the survival of lung cancer patients. In this study, we synthesized two novel coordination polymers (CP1 and CP2), using a simple method, and their structures were confirmed by single-crystal diffraction. Both CPs exhibited strong fluorescence. To enhance the biocompatibility of CP1 as a drug carrier, we encapsulated CP1 loaded with paclitaxel (PTX) in a pH- and temperature-sensitive nanohydrogel, nanofibrillated cellulose grafted (NFC-g)-(acrylic acid/acrylamide) [NFC-g-(AA/AM)], to form NFC-g-(AA/AM)-CP1@PTX. Characterization results revealed excellent responsiveness of this material to changes in temperature and pH, releasing more drug under higher temperatures and alkaline conditions. Through testing on the non-small cell lung cancer cell line A549, we found that NFC-g-(AA/AM)-CP1@PTX significantly reduced the invasive ability of A549 cells in a dose-dependent manner and downregulated the expression of cyclooxygenase-2 (COX-2), demonstrating anti-proliferative activity. These findings indicate the potential therapeutic value of NFC-g-(AA/AM)-CP1@PTX in lung cancer treatment. [ABSTRACT FROM AUTHOR]

The article discusses the profound impact of advancements in computing and software on theoretical simulations, marking a transformative era in computational chemistry. Focused on theoretical coordination chemistry, it delves into the historical context and underscores the contemporary importance of computational methods. Coordination materials, involving metal atoms surrounded by ligands, are highlighted for their pivotal roles across scientific disciplines. The manipulation of ligands and metal ions within these compounds offers diverse functionalities, from catalytic modifications to enhancing oxygen transport in biological systems. The comprehensive review explores the basics of coordination materials, detailing examples across various categories. Theoretical approaches, including quantum mechanics methods like density functional theory (DFT) and Monte Carlo simulations, are thoroughly examined. The article emphasizes crystallography techniques for Metal-Organic Frameworks (MOFs) and concludes by emphasizing the exponential growth in computing power, making modeling and simulation indispensable in molecular and material research. The development of an integrated computational strategy rooted in DFT is highlighted as a crucial advancement, bridging precision and computational practicality. This holistic approach advances understanding in coordination chemistry and nanostructured materials, paving the way for innovative applications and discoveries. [ABSTRACT FROM AUTHOR]

Supported multimetallic alloy nanoparticles (NPs) have shown great potential for applications owing to combined functions of constituent metals, and more remarkably, enhanced physicochemical properties and even novel synergistic effects that are not possessed by their parent metals. Nevertheless, synthesizing this kind of nanocomposites has been a long-standing challenge using conventional wet chemistry. Here, this study reports an efficient, versatile strategy for the preparation of multimetallic alloy NPs supported by layered double hydroxides (LDH) and/or layered double oxides (LDO). In this approach, different metal precursors are intercalated stepwise into the gallery space of LDH. Along with the coordination reaction between the metal precursors, 2D cyanide bridged coordination polymers (CP) are formed in the confined space. Afterward, supported multimetallic alloy NPs can be obtained via either liquid-phase reduction or thermal autoreduction. Due to the homogeneous mixing of metals in the 2D CP, ultrafine alloy NPs can be obtained with high particulate uniformity and compositional tailorability. A large series of supported binary alloy NPs (FePd, FePt, CoPd, CoPt, NiPd, NiPt, and PtPd) and ternary alloy NPs (FePdPt, FeNiPt, FeCoPt, and NiCoPt) are successfully synthesized with this approach. The resulting supported multimetallic alloy NPs present great potential in numerous applications. To demonstrate their workability, one class of LDH/NiPd nanocomposite is explored as a model heterogeneous catalyst with respect to the carbon-carbon cross-coupling reactions (Suzuki-Miyaura, Heck, and Sonogashira cross-coupling reactions). [ABSTRACT FROM AUTHOR]

The potentials for the electrochemical reduction of glassy carbon electrodes with deposited copper(II) coordination polymers (CP) containing polypyridine ligands with naphthyl and anthracyl substituents are similar to the potentials of the redox transformations of the corresponding ligands. The difference between the reduction potential of the CP-modified electrode and the potential for the redox transformation of the ligands in solution is greater when the lowest unoccupied molecular orbital of the ligand is predominantly located not on the carbocyclic but rather heterocyclic fragment. [ABSTRACT FROM AUTHOR]

The reactions of K[Cu(CN)} with aliphatic diamines [urea, ethylenediamine (en) and propane-1,3-diamine (tn)] in presence of MeSnCl or PhSnCl form coordination polymers (CP) with various compositions and architectures. Five coordination polymers; PhSnOH, 1, $$^{3}_{\infty } \left\{ {\left[ {{\text{Cu}}^{\text{II}} \left( {\text{en}} \right)_{2} {\text{H}}_{2} {\text{O}}} \right]\left[ {{\text{Cu}}^{\text{I}}_{2} \left( {\text{CN}} \right)_{4} } \right]} \right\}$$ , 2, $$^{ 3}_{\infty } \left\{ {\left[ {{\text{H}}_{ 2} {\text{tn}}} \right]\left[ {\left( {{\text{Cu}}_{ 2} \left( {\text{CN}} \right)_{ 3} } \right)_{ 2} } \right] \cdot {\text{H}}_{ 2} {\text{O}}} \right\}$$ , 3, $$^{ 3}_{\infty } \left\{ {\left[ {{\text{Cu}}^{\text{II}} \left( {\text{tn}} \right)_{ 2} } \right]\left[ {{\text{Cu}}_{ 2}^{\text{I}} \left( {\text{CN}} \right)_{ 3} } \right]_{ 2} } \right\}$$ , 4 and K[Cu(CN)]·(HO), 5, have been characterized by elemental analyses, IR, mass and H-NMR spectroscopy, thermogravimetric analyses and X-ray single crystal diffraction. The structures of CP 2- 5 are organotin free and depend on the type of the solvent and the structural variability and flexibility of the RSn cation and aliphatic diamine ligand. The structures contain different building blocks; [Cu(CN)], [Cu(CN)] and [Cu(CN)]. [ABSTRACT FROM AUTHOR]

Yellow crystals of the coordination polymers (CP) [Ag(qox)NO], 1 [Ag(pyzca)], 2 were obtained by the reaction of AgNO, quinoxaline (qox) or pyrazinecarboxylic acid (pyzcaH), respectively. The crystal structure of 1 displays 1D-extended chain of [Ag(qox)] with NO coordinated to every Ag atom. The 1D-chains of 1 are interconnected by strong hydrogen bonds, π-π stacking and short contacts developing two dimensional sheets containing channels. Furthermore, the overall packing arrangement of 1 results 3D topology with corrugated network. The Ag atom in 2 acquires tetrahedral geometry while each pyzca ligand provides three donor sites connected to three Ag atoms. The structure of CP 2 displays 1D-extended helical chain of [Ag(pyzca)]. The 3D-packing of the CP 2 creates nanometer pores. The luminescence properties of 1 and 2 were discussed. [ABSTRACT FROM AUTHOR]

In recent years, due to their tunable hierarchical architecture and wide versatility in applications, the synthesis of coordination polymers (CPs) has received wide attention from the scientific community. The present work focuses on the solvothermal synthesis of two novel lanthanoid CPs composed of gadolinium and dysprosium connected with 1H-pyrazole-3,5-dicarboxylic acid (1H-3,5-PDA) and benzene-1,4-dicarboxylic acid (1,4-BDC) linkers. The prepared materials were assessed using elemental analysis, SCXRD, FTIR, PXRD, thermogravimetric analysis and photoluminescence. The synthesized sensor (CP 2) is an efficient chemosensor for the detection of Fe3+ and meta-nitro aniline, thereby acting as a dual sensor. The material exhibits high quenching efficiencies of 98.25% and 98.11% towards the sensing at ppm-level concentrations of Fe3+ and m-NA, respectively. The Ksv values for the detection of Fe3+ and m-NA were found to be 3.76 × 104 L mol−1 and 2.5 × 104 L mol−1, respectively, which the confirm high and efficient sensing ability of the synthesized sensor. [ABSTRACT FROM AUTHOR]

Ribbon-like coordination polymers (CP) represents a highly unexplored innovative class of metal-coordination network. Herein, we have developed a highly scalable and chemically robust (pH = 3–10 stable) ribbon-like CP [{Cu(Pim)(L)(H2O)·H2O}]n (1) following a complete environment-friendly green synthesis route. Considering the presence of surface flanked labile coordinated water molecules and their appealing correlation with one-dimensional structural characteristics, such sort of ribbon-like CP was explored for the first time as excellent heterogeneous surface catalyst for largely unexplored three-component Hantzsch condensation for synthesis of different classes of dihydropyridine (DHP). Moreover, 1 is employed to synthesize bio-responsive drug ‘Ethidine’ (possessing high anti-oxidant and anticarcinogenic properties) characterized with Single Crystal X-ray Diffraction (SCXRD) analysis. Several DHP-based products are also analysed through in-depth SCXRD analysis. This report inaugurates the usage of a Cu(II) based ribbon-like CPs as heterogeneous surface catalyst following environmentally benign manner for synthesis of bioactive DHPs and Drugs.

A classical molecular mechanics force field, able to simulate coordination polymers (CP) based on ruthenium carboxylates (Ru2(O2CReq)4Lax) (eq = equatorial group containing aliphatic chains, Lax= axial ligand), has been developed. New parameters extracted from experimental data and quantum calculations on short aliphatic chains model systems were included in the generalized AMBER force field. The proposed parametrization was evaluated using model systems with known structure, containing either short or long aliphatic chains; experimental results were reproduced satisfactorily. This modified force field, although in a preliminary stage, could then be applied to long chain liquid crystalline compounds. The resulting atomistic simulations allowed assessing the relative influence of the factors determining the CP conformation, determinant for the physical properties of these materials. © 2013 Wiley Periodicals, Inc. [ABSTRACT FROM AUTHOR]

Coordination polymers (CP) based on the ethylene tetrathiolate ligand (CS) and Ni, and previously isolated as insoluble conductive powders are grown as nanoparticles (NP) using ionic liquid (IL) as stabilizing agent. The time of addition of the IL determines the morphology, and consequently the properties of the CP. The smaller (10-20 nm) and soluble NP are obtained when IL is present at the complexation step. The mechanism of growth of NP is studied. The NP size is sensitive to the amount of IL and to the reaction temperature. NPs are studied by TEM/EDX, DLS, liquid- and solid-state NMR, and conductivity. [ABSTRACT FROM AUTHOR]

Doped coordination polymers and dimers based on lanthanoids and anilato ligands exhibiting different SMM behaviour depending on the structure and solvents. In this work we report the synthesis, structure and magnetic properties of two lanthanoid based coordination polymers (CP) and two dimers prepared with two derivatives of the 2,5-dihydroxy-1,4-benzoquinone (C 6 O 4 X 2)2− as ligands. Using the bromanilato ligand: (C 6 O 4 Br 2)2− we have prepared the CP [Eu 1.96 Dy 0.04 (C 6 O 4 Br 2) 3 (DMSO) 6 ]·2DMSO (1) (DMSO = dimethylsulfoxide) and with the chlorocyananilato ligand: (C 6 O 4 (CN)Cl)2−) we have prepared one CP formulated as [Eu 1.96 Dy 0.04 (C 6 O 4 (CN)Cl) 3 (DMSO) 6 ] (2) and two isostructural dimers: [Eu 1.96 Dy 0.04 (C 6 O 4 (CN)Cl) 3 (H 2 O) 10 ]·6H 2 O (3) and [Eu 2 (C 6 O 4 (CN)Cl) 3 (H 2 O) 10 ]·6H 2 O (4). Compounds 1 , 2 and 3 are Eu(III) compounds doped with 2.0 % of Dy(III), whereas compound 4 is a pure phase of Eu(III). The X-ray structure of these CPs shows that compounds 1 and 2 present neutral (6,3)-2D networks with rectangular cavities in 1 and very distorted hexagonal cavities in 2 , while 3 and 4 are isostructural and present a dimeric structure where the Ln(III) ions are connected by a bis-bidentate chlorocyananilato ligand. Each metal completes its nonacoordination environment with a terminal bidentate chlorocyananilato ligand and five water molecules in a slightly distorted capped square antiprismatic geometry. In addition, these coordination complexes have very interesting magnetic properties. Compounds 1 and 3 behave as single-molecule magnets (SMM) with energy barriers of 40.9 and 25.3 K, respectively. In contrast, compound 2 does not present any SMM behaviour. [ABSTRACT FROM AUTHOR]

The reactions of K[Cu(CN)], MeSnCl and methylpyrazine (Me-pyz) or tetramethylpyrazine (Me-pyz) in water/dioxane system afforded two new coordination polymers (CP); [{Cu(μ-CN)}(μ-Me-pyz)·dioxane], 1, and [Cu{μ-Mepyz}{μ-CNSn(Me)NC-}], 2. X-ray single crystal analysis shows that 1 contains two crystallographically different copper(I) ions which acquire trigonal planar geometry. The structure of 1 contains non-linear (CuCN) chains that are interconnected by the Me-pyz ligands forming 3D-network structure. The structure of 1 has two-fold interpenetrating 3D-networks with dioxane molecules encapsulated in the voids of the structure. The structures of these CP were also investigated by FTIR and mass spectroscopy, thermal analysis and compared with the prototype compounds. Spectroscopic analyses of 2 confirm the presence of all components (MeSn, Cu(CN) and Me-pyz) and support the composition predicted by elemental analysis. 1 and 2 display strong fluorescence in the solid state at room temperature. [ABSTRACT FROM AUTHOR]

The article discusses the results of an experiment which obtained the morphology and structure of coordination polymers (CP) by synthesizing the solutions of [Cu(en)2]&sup2+ ions. The crystal structure of the CP was subjected to SEM, TEM and X-ray diffraction (XRD) with Cu Kα radiation. The role of the polyvinylpyrrolidone (PVP) in the synthesis is described.

The common property of all materials is their elasticity, directly related to the chemical components and interactions in their structure. However, the progress in constructing better devices is irreversibly tied to the understanding and designing of static or dynamic structural responses of strained materials. Such structural-property relationships have been explained for polymeric frameworks involving flexible 1,6-hexanediamine (HDA) linkers, with discrete HDA conformers. In the structure of ambient-pressure polymer Cd(HDA)2(NO3)2 the HDA linkers are conformationally disordered. This tetragonal phase α is stable down to 190 K, when the HDA linkers order in different conformations, which triggers a ferroelastic transition to the triclinic phase δ; the flash-cooling of phase α overcools it to 100 K. High pressure induces a ferroelastic transition to triclinic phase β at 1.10 GPa, followed by an isostructural transition to phase γ at 2.00 GPa. All four phases α–δ differ in the configurations of HDA conformers and Cd-coordination involving nitrate linkers. The unusual convex-shaped monotonic compression of Cd(HDA)2(NO3)2 phases α, β and γ has been explained by the mechanism of buckling-sticks: the increasing strain and mounting energy accumulated in the buckling HDA linkers is released by their conversions to shorter conformers. An analogous conformational transition takes place in Cd2(HDA)3(NO3)4 at 1.50 GPa. In another polymer Cu(HDA)2(MeCN)2·2BF4 the conformational changes induce its very high compressibility and partial amorphization above 1.20 GPa, caused by the non-coordinated conversions of the HDA conformers. [ABSTRACT FROM AUTHOR]

Electrocatalytic proton exchange membranes (PEMs) represent a promising avenue for advancing the field of electrochemical energy conversion and storage by combining the proton-conducting function of PEMs with enhanced catalytic activity by incorporation of metal ions. Here, we systematically studied the ZnO-based metal-organic framework (MOF) and found the introduction of pegylated ZnO to the (diethyl methylamine)/(H2PO4) matrix to form the p-type conducting MOF membrane with a bandgap of 3.67 eV. This membrane not only has a high protonic conductivity of 0.027 S/cm at 300 K with a transference number >0.99 but also possesses high activity (Tafel slope ∼36 mV/decade). The high reaction kinetics supported by finite element modeling simulations shows its ability to produce efficient and sustainable hydrogen. Our results suggest high current density of 1.52 mA/cm2, a turn over frequency [H2 (s−1)] ∼ 0.474 × 1 0 18 s − 1 , and a stability of 168 h in neutral medium (pH = 7). This work will enhance new strategies for fabricating membranes with ionic liquid in order to get membranes with protonic conductivity along with high activity for large-scale water electrolysis. [ABSTRACT FROM AUTHOR]

Three new 2D heteronuclear tetracyanonickelate(II) complexes with 4-ethylpyridine (4epy), [Cu(4epy)2Ni(µ-CN)4]n (1), [Zn(4epy)2Ni(µ-CN)4]n (2) and [Cd(4epy)2Ni(µ-CN)4]n (3), were synthesized and characterized by vibrational (FT-IR and Raman) spectroscopy, elemental and thermal analyses, single crystal (SC-XRD) and powder X-ray diffraction (PXRD) techniques. The single crystal X-ray analysis reveals that each metal ion (Cu(II), Zn(II), and Cd(II)) is coordinated by two nitrogen atoms from 4epy ligands and four nitrogen atoms from cyanide ligands and Ni(II) ions are coordinated by four carbon atoms from cyanide ligands showing a distorted octahedral and square planar coordination geometries, respectively. The most outstanding features of the complexes are the weak intermolecular C–H⋅⋅⋅Ni interactions between the Ni(II) ion and hydrogen atom of the ethyl group of the 4epy ligand. Adjacent 2D structures are further combined by these C–H⋅⋅⋅Ni interactions, generating a 3D network. The heterogeneous catalytic activity of 3 was investigated for oxidation of some primary and secondary aliphatic or aromatic alcohols; no acid formation was observed in some aromatic alcohols after 24 h and 100% aldehyde selectivity was determined. [ABSTRACT FROM AUTHOR]

Unusual quasi-two-dimensional crystals of a regular triangular shape, self-formed in the process of obtaining a coordination polymer based on phenazine and silver, are described and studied. X-ray diffraction studies were carried out, the interplanar distance was determined, and the spectra of Raman scattering were obtained. A mechanism is proposed that can cause the appearance of triangular crystals from nuclei of hexagonal symmetry. [ABSTRACT FROM AUTHOR]

Herein we report the synthesis and structural characterization of three new europium containing coordination polymers: [Eu(terpy)(2,6-ndc)1.5]·H2O (Linus Pauling (LP) 1), [Eu(terpy)(1,4-ndc)(1,4-Hndc)] (LP-2), and [Eu(phen)(2,6-ndc)1.5]·DMF (LP-3). The title compounds were prepared hydro- or solvo-thermally and are constructed from either 1,4- or 2,6-naphthalenedicarboxylic acid (ndc) and 1,10-phenanthroline (phen) or 2,2′:6′,2′′-terpyridine (terpy) ligands. The X-ray diffraction data show LP-2 is two-dimensional while LP-1 and LP-3 are three-dimensional. Compounds LP-1 and LP-2 exhibit modest thermal stability up to 400 °C, while LP-3 was notably unstable when removed from its reaction media and prone to degradation. Despite the apparent porosity, nitrogen physisorption measurements conducted on LP-1 and LP-2 revealed lower than anticipated surface area and pore volumes of 1 m2 g−1 and 0.037 cm3 g−1 and 1 m2 g−1 and 0.015 cm3 g−1, respectively. Photoluminescence characterization of all three compounds was performed in the solid state and in all cases the results reveal bright Eu3+-based emission. The excitation spectra show the emissive properties arise from efficient ligand-to-metal resonance energy transfer. Additionally, LP-1 and LP-2 also display emission when exposed to soft X-rays, and as such show promise toward the design of scintillators. [ABSTRACT FROM AUTHOR]

Metal–organic coordination polymers (CPs) are a broad class of materials that include metal–organic frameworks (MOFs). CPs are highly ordered crystalline materials that are composed of metal ions (or metal ion clusters) and multidentate organic ligands that serve as linkers. One‐, two‐, and three‐dimensional CPs can be formed, with 2D and 3D structures referred to as MOFs. CPs have gained a lot of attention due to attractive structural features like structure versatility and tunability, and well‐defined pores that enable the encapsulation of cargo. Further, CPs show a lot of promise for drug delivery applications, but only a very limited number of CPs are currently being evaluated in clinical trials. In this review, we outlined features that are desired for CP‐based drug delivery platform, and briefly described most relevant characterization techniques. We highlighted some of the recent efforts directed toward developing CP‐based drug delivery platforms with the emphasis on vaccines against cancer, infectious diseases, and viruses. We hope this review will be a helpful guide for those interested in the design and evaluation of CP‐based immunological drug delivery platforms. This article is categorized under:Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious DiseaseTherapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease [ABSTRACT FROM AUTHOR]