1. Study on Fluorescence Recognition of Fe3+, Cr2O72− and p-Nitrophenol by a Cadmium Complex and Related Mechanism
- Author
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Lu Liu, Jian-Min Li, Hui-Jie Wang, Meng-Di Zhang, Yu Xi, Jie Xu, Yuan-Yuan Huang, Bo Zhang, Ying Li, Zhen-Bei Zhang, Zi-Fang Zhao, and Cheng-Xing Cui
- Subjects
coordination complex ,fluorescence recognition ,mechanism ,Organic chemistry ,QD241-441 - Abstract
The effective detection of environmental pollutants is very important to the sustainable development of human health and the environment. A luminescent Cd(II) coordination complex, {[Cd(dbtdb)(1,2,4-H3btc)]·0.5H2O}n (1) (dbtdb = 1-(2,3,5,6-tetramethyl-4-((2-(thiazol-4-yl)-2H-benzo[d]imidazol-3(3aH)-yl)methyl)benzyl)-2,7a-dihydro-2-(thiazol-4-yl)-1H-benzo[d]imidazole, 1,2,4-H3btc = 1,2,4-benzenetricarboxylic acid), was obtained by hydrothermal reactions. Complex 1 has a chain structure decorated with uncoordinated Lewis basic O and S donors and provides good sensing of Fe3+, Cr2O72−, and p-nitrophenol with fluorescence quenching through an energy transfer process. The calculated binding constants were 3.3 × 103 mol−1 for Fe3+, 2.36 × 104 mol−1 for Cr2O72−, and 9.3 × 103 mol−1 for p-nitrophenol, respectively. These results show that 1 is a rare multiresponsive sensory material for efficient detection of Fe3+, Cr2O72−, and p-nitrophenol.
- Published
- 2023
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