Study on Fluorescence Recognition of Fe<sup>3+</sup>, Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> and <i>p</i>-Nitrophenol by a Cadmium Complex and Related Mechanism
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,
Cheng-Xing Cui
Affiliations
Lu Liu
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
Jian-Min Li
School of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, China
Hui-Jie Wang
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
Meng-Di Zhang
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
Yu Xi
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
Jie Xu
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
Yuan-Yuan Huang
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
Bo Zhang
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
Ying Li
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
Zhen-Bei Zhang
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
Zi-Fang Zhao
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
Cheng-Xing Cui
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
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.
