A symmetric Schiff base fluorescent "turn-on" chemosensor for aluminum (III) ion selective detection based on hydrolysis

被引：10
|
作者：
Li, Yingying [1 ]
Liu, Yongchun [1 ]
Wei, Xiaoxia [1 ]
Wang, Lipeng [1 ]
Wang, Yan [1 ]
Zhang, Qiming [1 ]
机构：
[1] Longdong Univ, Coll Chem & Chem Engn, Qingyang 745000, Gansu, Peoples R China
来源：
JOURNAL OF MOLECULAR STRUCTURE | 2022年 / 1261卷
关键词：
Synthesis; Crystal structure; Fluorescent chemosensor; Aluminum (III) ion; Hydrolysis; LIVING CELLS; AL3+; PROBE; RECOGNITION; SINGLE; SENSOR;
D O I：
10.1016/j.molstruc.2022.132884
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A new symmetric Schiff base fluorescence turn-on chemosensor H2L (N,N'-bis[2,4-dihydroxy benzal]-1,5diamino naphthalene) was designed and synthesized. H2L showed favorable selectivity and sensitivity to Al3+ with a significant color change from yellow to colorless in ethanol. The detection limit of H2L was as low as 11.79 nm. Based on fluorescence titration, 1 H NMR and IR results, a plausible recognition mechanism of H2L is suggested to proceed via a hydrolysis process. The hydrolysis constant was calculated to be Kh = 3.0 x 10 4 M -1. (c) 2022 Elsevier B.V. All rights reserved.
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页数：8
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