Auxiliary ligand-assisted two novel one-dimensional indium coordination polymers: Synthesis, crystal structures and photoluminescence characterization effected by solvent and temperature

摘要

Two new indium coordination polymers (CPs) with mixed-ligand formulated as {[In(1,4-bda)(1.5)(phen)]center dot 2H(2)O}(n) (In1) and {In(1,4-bda)(2,2'-bipy)Cl}(n) (In2) (1,4-H(2)bda = 1,4-benzenedicarboxylic acid; phen = 1,10-phenanthrolin; 2,2'-bipy = 2,2'-bipyridine) have been synthesized and characterized by single-crystal X-ray diffraction, infrared (IR), elemental analysis and thermal gravimetric analyses (TGA). In1 exhibits one-dimensional (ID) ladder chain, which further forms three-dimensional (3D) structure with pi center dot center dot center dot pi stacking interaction. Formation of 3D compact supramolecular framework in In2 is generated through C-H center dot center dot center dot Cl hydrogen bonding contacts and pi center dot center dot center dot pi stacking interaction. The photoluminescence (PL) characterizations to In1 and In2 affected by solvent and temperature are studied in detail. Thermogravimetric curves showed that In1 and In2 start to undergo phase transition until ca. 450 degrees C and 495 degrees C, respectively. (C) 2014 Elsevier B.V. All rights reserved.