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A new multi-branched benzoic acid rare earth complex (MBBAL-Eu (III) complex) was prepared. The advanced tested technologies were employed to characterize the composition and structure of as-prepared complex. Scanning electron microscopy (SEM) image shows that as-prepared complex has a layer structure. Transmission electron microscopy (TEM) image presents that the shape of MBBAL-Eu (III) complex is similar to oval ; the size is in the range of 20-50 nm. The thermogravimetric analysis (TGA) curves of MBBAL-Eu (III) complex reveal that as-prepared complex has good thermal stability. The PET luminescence fibers with MBBAL-Eu (III) complex were prepared through melt-spinning and electrospun methods. The results prove that as-prepared fibers with MBBAL-Eu (III) complex have good luminescent properties and show bright red light. [ABSTRACT FROM AUTHOR]

A novel metal-organic framework (MOF) was fabricated by spontaneous K+-induced supramolecular self-assembly with the embedded tripodal ligand units. When the 3D ligand was loaded onto Fe3O4@mSiO2 core-shell nanoparticles, it could effectively separate K+ ions from a mixture of Na+, K+, Mg2+, and Ca2+ ions through nanoparticle-assisted MOF crystallization into a Fe3O4@mSiO2@MOF hybrid material. Excess potassium ions could be extracted because of the specific cation-π interaction between K+ and the aromatic cavity of the MOF, leading to enhanced separation efficiency and suggesting a new application for MOFs. [ABSTRACT FROM AUTHOR]

A novel luminescent chemosensor for detecting Hg2+with high selectivity, based on a pendant benzo crown ether terbium complex, has been designed and prepared. [ABSTRACT FROM AUTHOR]

The elimination of dye pollutants from wastewater is a significant concern that has prompted extensive research into the development of highly efficient photocatalytic membranes. A novel method was proposed to prepare photocatalysis-enhanced poly(acrylonitrile-methyl acrylate) (PAN-based) membranes in this study. In detail, the blended membrane containing SiO 2 @TiO 2 nanoparticles with a shell-core structure was first prepared via thermal-induced phase separation. The SiO 2 nanoshells were dissolved, and the released TiO 2 nanoparticles migrated to the membrane surface during a simple hydrolysis process, which prevents the TiO 2 nanoparticles from directly contacting or interacting with the polymer matrix. The hydrogen bonds bind the exposed TiO 2 with the PAN membrane surface, resulting in the formation of the TiO 2 @HPAN hybrid membrane. The photocatalytic efficiency of the TiO 2 @HPAN membrane doubled compared with that of nonhydrolyzed membranes. In the presence of UV light, the hybrid membrane can degrade 99.8% of methylene blue solution in less than 2 h, compared to only 86.1% for the blended membranes. Further, the TiO 2 @HPAN membrane showed excellent photocatalytic activity for cationic dyes due to electrostatic attraction. Moreover, the high-flux recovery rate and recycling stability of the TiO 2 @HPAN membrane lead to an excellent antifouling property. The facile preparation method proposed in this work shows extraordinary potential for the development of highly efficient selective photocatalytic materials for cationic dyes to be used in wastewater treatment applications.

A novel metal-organic framework (MOF) was fabricated by spontaneous K(+)-induced supramolecular self-assembly with the embedded tripodal ligand units. When the 3D ligand was loaded onto Fe3O4@mSiO2 core-shell nanoparticles, it could effectively separate K(+) ions from a mixture of Na(+), K(+), Mg(2+), and Ca(2+) ions through nanoparticle-assisted MOF crystallization into a Fe3O4@mSiO2@MOF hybrid material. Excess potassium ions could be extracted because of the specific cation-π interaction between K(+) and the aromatic cavity of the MOF, leading to enhanced separation efficiency and suggesting a new application for MOFs., (© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

To confirm how different anions influence sup-ramolecular self-assembly of lanthanide-organic frameworks (LnOFs) as well as their luminescent properties, a new flexible achiral tripodal ligand, 1,1,1-tris-{[(2'-benzylaminoformyl)phenoxyl]methyl}ethane (L) and the LnOFs {[EuL(NO(3))(3)]·1.5CHCl(3)}(n) and [EuL(pic)(3)](n) have been designed and assembled. In the two LnOFs, {[EuL(NO(3))(3)]·1.5CHCl(3)}(n) demonstrates an unprecedented chiral noninterpenetrated two-dimensional (2D) honeycomblike (6,3) (hcb, Schläfli symbol 6(3), vertex symbol 6·6·6) topological network, and [EuL(pic)(3)](n) confirms an unusual chiral LnOF with three-dimensional (3D) (10,3)-a (srs, SrSi(2), Schläfli symbol 10(3), vertex symbol 10(2)·10(4)·10(4)) topological framework. Also the anion-induced structures and energy transfer processes in the luminescence behavior of the two LnOFs were discussed in detail.