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Two asymmetric diamines [1,1′-biphenyl]-4-yl(3,5-diaminophenyl) methanone (BPDAM) and (3,5-diaminophenyl)(4′-(naphthalen-1-yl)-[1,1′-biphenyl]-4-yl) methanone(DANPBPM) were synthesized by Suzuki coupling reaction from (4-bromophenyl)(3,5-diaminophenyl) methanone (BDAM) and corresponding arylboronic acid. A series of polyimides exhibiting organic solubility were prepared from 2,2′,3,3′-biphenyl tetracarboxylic dianhydride(BPDA) and these above three new diamines via a two-stage process. The obtained polymers showed outstanding organic solubility and high thermal stability. And studies have shown that the storage device with a sandwich type configuration of Al/polyimide/ITO was prepared by the traditional liquid spin coating technology, which showed the storage capacity of flash memory type. All the polyimide-based devices showed bistable conductivity switching and nonvolatile memory behavior that had long preservation period and high ON/OFF electric current, the rate of which was 104. [ABSTRACT FROM AUTHOR]

As an important component of highly functional macromolecule semiconductor, two kinds of new diamine monomers, bis(5‐amino‐6‐methoxy‐[1,1'‐biphenyl]‐3‐yl) methanone (BAMBPM) and bis(5‐amino‐4'‐(9H‐carbazol‐9‐yl)‐6‐methoxy‐[1,1'‐biphenyl]‐3‐yl) methanone (BACzMBPM) were used as raw materials. Two kinds of soluble aromatic polyimides were prepared from BAMBPM and BACzMBPM by polycondensation with 2,2',3,3'‐biphenyl tetracarboxylic dianhydride (BPDA) via a two‐step procedure. The obtained polyimides were sufficiently characterized, and showed superior organic solubility and excellent thermal stability, with a weight loss of 5 % weight loss above 300 °C. Memory devices with Al/polyimide/ITO structure were prepared by the traditional method of solution spin coating. Both devices show tristable characteristics, with high ON/OFF current ratios as high as 104 and long maintenance times of 104 seconds in the environmental atmosphere. [ABSTRACT FROM AUTHOR]

Smart windows are a promising solution to improve energy-saving efficiency and indoor comfort due to their potential functionalities including solar modulation, coloration, self-cleaning, self-power, and moisture scavenging. Recently, smart windows constructed by a supramolecular strategy have attracted increasing attention due to the inherent dynamic, reversible and adaptive properties of noncovalent interactions, which can endow the fabricated smart windows with desired fascinating functionalities. In this review, emerging supramolecular strategy-based materials are outlined and their applications for fabricating smart windows are summarized. Mechanisms and properties of the functional supramolecular materials are demonstrated, especially their solar modulation ability and color change effect. Challenges and opportunities for the supramolecular strategy-based materials are also discussed for future innovation in the development of ideal smart windows. [ABSTRACT FROM AUTHOR]

A series of para-toluene sulfonamide ligands [TsNHPr-i(HL1), TsNHBu-t(HL2), TsNHPh(HL3), TsNHPhMe-p(HL4), TsNHPhOMe-p(HL5)] were synthesized by amidation using para-toluene sulfonyl chloride reacting with different primary amines. A series of homoleptic lanthanide complexes (Ln L3, 1–10) (Ln = La, L = L1 (1), Ln = Gd, L = L2 (2), Ln = La, L = L2 (3), Ln = Gd, L = L2(4), Ln = La, L = L3 (5), Ln = Gd, L = L3 (6), Ln = La, L = L4 (7), Ln = Gd, L = L4(8), Ln = La, L = L5 (9), Ln = Gd, L = L5 (10)) were prepared by amine elimination reactions of the ligands with Ln[N(SiMe3)2]3 (Ln = La, Gd). Complexes 1, 3, 5, 7 and 9 were all characterized by NMR spectra, and the structures of complex 3 was determined by single-crystal X-ray diffraction. Complex 3 crystallizes a binuclear cluster, consisting of two La3+ and six (TsNBu-t)− anions. Three (TsNBu-t)− anions are chelating to each La3+ as bidentate model with O and N forming three-membered chelate rings; one of three anions is bridging to another La3+ via oxygen. All complexes were characterized using elemental analysis and infrared spectra. The catalytic properties of complexes 1–10 for the ring-opening polymerization of ε-caprolactone were studied and the results showed that all complexes are efficient initiators for this ring-opening polymerization reaction. [ABSTRACT FROM AUTHOR]

A series of Mannich base monophenol ligands [2,4-tBu2-6-CH2NMe2-PhOH ( HA), 2,4-tBu2-6-CH2NEt2-PhOH ( HB), 2,4-tBu2-6-CH2Py-PhOH ( HC), 2-tBu-4-Me-6-CH2Py-PhOH ( HD), 4-tBu-2,6-(CH2Py)2-PhOH ( HE)] were synthesized by using phenol and formaldehyde reacting with secondary amine. A series of homoleptic lanthanide complexes [LaA3 ( 1), GdA3 ( 2), LaB3 ( 3), GdB3 ( 4), LaC3 ( 5), GdC3 ( 6), LaD3 ( 7), GdD3 ( 8), LaE3 ( 9), GdE3 ( 10)] were prepared by amine of the ligands with Ln[N(SiMe3)2]3 (Ln = La, Gd). Complexes 1, 3, 5, 7 and 9 were all characterized using NMR spectra, and the structures of complexes 3 and 5 were determined using single-crystal X-ray diffraction. Complexes 3 and 5 are isostructural, and the lanthanum center exhibits a distorted octahedral geometry, in which the O(1), O(2) and O(3) atoms occupy three positions and N(1), N(2) and N(3) atoms occupy the other three positions. All complexes were characterized using elemental analysis and infrared spectra. The catalytic properties of complexes 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 for the ring-opening of ε-caprolactone were studied, and the results show that all complexes are efficient initiators for this ring-opening reaction. Copyright © 2016 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Two new lanthanide amidate complexes, {Gd2[Cy(NCO)iPr]6} (1) and {La2[Cy(NCO)iPr]6[Cy(HNCO)iPr]} (2) (iPr = isopropyl, Cy = cyclohexyl), have been synthesized in good yields by silylamine elimination reaction between Gd[N(SiMe3)2]3or La[N(SiMe3)2]3andN-(cyclohexyl)isopropyl amide. Complexes1and2have been characterized by NMR, elemental analyzes, and X-ray diffraction. The molecular structures of {[Cy(NCO)iPr]Gd[?2-Cy(NCO)iPr]3Gd[Cy(NCO)iPr]2} (1) and {[Cy(NCO)iPr]La[?2-Cy(NCO)iPr]3La[Cy(NCO)iPr]2[Cy(HNCO)iPr]} (2) exhibit a dimer structure with three?2-O bridging bonds that look like a windmill. Additionally,2formed an intramolecular N–H···O hydrogen bond via a neutral amide. The catalytic properties of1and2for ring-opening polymerization (ROP) of?-caprolactone have been studied. The results show that1and2are efficient catalysts for the ROP of?-caprolactone. [ABSTRACT FROM PUBLISHER]

The lanthanum(III) complexes tris(3,5-diphenylpyrazolato-κ2 N, N′)tris(tetrahydrofuran-κ O)lanthanum(III) tetrahydrofuran monosolvate, [La(C15H11N2)3(C4H8O)3]·C4H8O, (I), and tris(3,5-diphenyl-1,2,4-triazolato-κ2 N1, N2)tris(tetrahydrofuran-κ O)lanthanum(III), [La(C14H10N3)3(C4H8O)3], (II), both contain LaIII atoms coordinated by three heterocyclic ligands and three tetrahydrofuran ligands, but their coordination geometries differ. Complex (I) has a mer-distorted octahedral geometry, while complex (II) has a fac-distorted configuration. The difference in the coordination geometries and the existence of asymmetric La-N bonding in the two complexes is associated with intramolecular C-H...N/O interactions between the ligands. [ABSTRACT FROM AUTHOR]

New N-silver(I) acetylbenzamide complexes of type L n⋅AgNC9H8O2 (L = PPh3; n = 1, 2a; n = 2, 2b; n = 3, 2c; L = P(OEt)3; n = 1, 2d; n = 2, 2e; n = 3, 2f) were prepared. These complexes were obtained in high yields and characterized by elemental analysis, 1H NMR, 13C{H} NMR, 31P{H} NMR and IR spectroscopy, respectively. The molecular structure of 2b has been determined by X-ray single-crystal analysis in which the silver atom is in a distorted tetrahedral geometry and crystallizes as cis-trans. New N-silver(I) acetylbenzamide complexes have a four-membered ring, which could influence their chemical and physical properties and modulate volatility. Metal organic chemical vapor deposition experiments were carried out successfully at 400°C and 450°C using 2e as precursor for the deposition of silver films, respectively. The high-purity silver film obtained at 400°C is dense and homogeneous. Copyright © 2012 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]