Citation: Xin WANG, Meng-Fan WANG, Min-Jie ZHANG, Chen CAO, Zheng NIU, Jian-Ping LANG. Synthesis, Structure, and Luminescence Properties of Coordination Polymers Containing Conjugated Triene Pyridine Ligands[J]. Chinese Journal of Inorganic Chemistry, ;2022, 38(9): 1771-1780. doi: 10.11862/CJIC.2022.197 shu

Synthesis, Structure, and Luminescence Properties of Coordination Polymers Containing Conjugated Triene Pyridine Ligands

Suzhou Key Laboratory of Precision Transformation of Resource Molecules, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China

Corresponding author: Zheng NIU, zhengniu@suda.edu.cn Jian-Ping LANG, jplang@suda.edu.cn
Received Date: 30 April 2022
Revised Date: 23 May 2022

Figures(6)

Solvothermal reactions of the conjugated triene pyridine ligand 1, 6-bis(4-pyridyl)-l, 3, 5-hexatriene (bphte) and Cd salts in the presence of auxiliary carboxylic acid ligands (2, 5-furandicarboxylic acid (2, 5-H₂FDC) and 1, 3, 5-trimesic acid (1, 3, 5-H₃BTC)) gave rise to two coordination polymers [Cd(2, 5-FDC)(bphte)(H₂O)]_n (1) and [Cd(1, 3, 5-HBTC)(bphte)]_n (2), respectively. Both complexes were characterized by elemental analysis, IR, single-crystal X-ray diffraction, powder X - ray diffraction, and thermogravimetric analysis. Complex 1 has a 3D framework with an spl topological structure, while complex 2 holds another 3D architecture formed by bridging 1D [Cd₂(1, 3, 5-HBTC)₂]_n chains via bphte ligands. Both complexes exhibited luminescence emission in the solid state. Complex 2 showed an emission quenching phenomenon in Fe³⁺ aqueous solution, and thus was used as an excellent fluorescence probe to selectively detect Fe³⁺ in water with a low detection limit of 0.013 μmol·L^-1. The above emission quenching mecha-nism is likely due to the overlap between the absorption band of the Fe³⁺ ion and the excitation band of 2.
- coordination polymers,
- conjugated triene pyridine ligand,
- crystal structures,
- luminescent probe
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