期刊
JOURNAL OF MOLECULAR STRUCTURE
卷 1252, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molstruc.2021.132219
关键词
Fluorescent chemical sensor; AIE; Zn2+; Cu2+; Relay detection
资金
- Youth Doctoral Fund Project of colleges and universities in Gansu Province [2021QB-050]
- Science and Technology Program of Gansu Province [21YF5GA056]
- Natural Science Foundation of Gansu Province [20JR10RA222]
- Tianyou innovation team of Lanzhou Jiaotong University [TY202004]
The chemical sensor SX based on o-hydroxybenzaldehyde design and synthesis exhibited unique AIE properties, high selectivity and sensitivity to Zn2+ without Cu2+, and potential for relay detection of Cu2+ in environmental water samples.
A simple, fast response and aggregation-induced emission (AIE) fluorescent chemical sensor 2,2'-(hydrazine-1,2-diylidenebis(methaneylylidene))diphenol (SX) based on o-hydroxybenzaldehyde had been designed and synthesized. Interestingly, the increase of water content, the color of the SX solution changed from colorless to bright yellow in solution, and the chemical sensor SX showed the unique AIE properties. The chemical sensor SX exhibited high selectivity and sensitivity to Zn2+ without Cu2+ in DMSO/H2O (4:1, v/v) solution, and the limit of detection was 6. 8 x 10(-8) M. In addition, the in situ generated [SX + Zn2+] system was used for the relay detection of Cu2+ without separation and purification and exhibited a new fluorescence quenching signal under the same conditions, and limit of detection [SX + Zn2+] to Cu2+ was 2.3 x 10(-8) M. Furthermore, the chemical sensor SX had been successfully applied to detect and analyze Zn2+ and relay detect Cu2+ in environmental water samples. (C) 2021 Elsevier B.V. All rights reserved.
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