Unusual method for phenolic hydroxyl bridged lanthanide CPs: syntheses, characterization, one and two photon luminescence

• Published in: Dalton transactions : an international journal of inorganic chemistry 2013-02, Vol.42 (6), p.2052-2061
• Main Authors: Zeng, Cheng-Hui, Zhao, Fu-Li, Yang, Yang-Yi, Xie, Ming-Yuan, Ding, Xue-Mei, Hou, De-Jian, Ng, Seik Weng
• Format: Article
• Language: English
• Subjects: Coordination Complexes - chemical synthesis; Coordination Complexes - chemistry; Crystallography, X-Ray; Differential thermal analysis; Diffraction; Fourier transforms; Hydrogen-Ion Concentration; Infrared; Lanthanides; Lanthanoid Series Elements - chemistry; Ligands; Luminescence; Luminescent Measurements; Molecular Conformation; Phenols - chemistry; Photons; X-rays
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/c2dt32233a

A "basophilic method" for phenolic hydroxyl bridged lanthanide coordination polymers (CPs) was developed. With this method, eleven CPs with the general formula of [Ln(HL1)L1·H(2)O](n) (Ln = Tb (1), Nd (2), Eu (3), Gd (4), La (5), Er (6), Y (7), H(2)L1 = 4-methyl salicylic acid) and [Ln(HL2)L2·2MeOH](n) (Ln = Eu (8), Tb (9), Gd (10), La (11), H(2)L2 = 3-hydroxy-2-naphthoic acid) were synthesized based on two ligands, and five of them (1-4 and 8) were characterised by X-ray single crystal diffraction. The powder X-ray diffraction patterns (PXRD) of complexes showed that 1-7 are isostructural, 8-11 are isostructural. Furthermore, 1 was characterised by Fourier transform infrared (FT-IR), thermogravimetric analysis (TGA), differential thermal analysis (DTA), elemental analysis (EA), one and two photon luminescence were investigated in detail.