An effective dual sensor for Cu2+ and Zn2+ with long-wavelength fluorescence in aqueous media based on biphenylacrylonitrile Schiff-base

被引：33
作者：
Zha, Bowen [1 ]
Fang, Shuting [1 ]
Chen, Huiling [1 ]
Guo, Hongyu [1 ,2 ,3 ]
Yang, Fafu [1 ,2 ,3 ]
机构：
[1] Fujian Normal Univ, Coll Chem & Mat, Fuzhou 350007, Peoples R China
[2] Fujian Key Lab Polymer Mat, Fuzhou 350007, Peoples R China
[3] Fujian Prov Key Lab Adv Mat Oriented Chem Engn, Fuzhou 350007, Peoples R China
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2022年 / 269卷
基金：
中国国家自然科学基金;
关键词：
Biphenylacrylonitrile; Cu2+; Zn2+; Sensor; Fluorescence; BODIPY; COPPER; AIE; PROBE; IONS; EFFICIENT; POLYMER; WATER; FE3+; ZINC;
D O I：
10.1016/j.saa.2021.120765
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Although some sensors for Cu2+ and Zn2+ had been reported, the sensor with long-wavelength emission in aqueous media for in-situ detecting Cu2+ and Zn2+ was always expected. Herein, a biphenylacrylonitrile Schiff-base (OPBS) with large aromatic conjugated system was designed and synthesized in yield of 82%. OPBS possessed excellent long-wavelength fluorescence at 550-750 nm in aqueous media, which selectively response to sense Cu2+ with quenched fluorescence and Zn2+ with chromotropic fluorescence from red to yellow. The detection of Cu2+ and Zn2+ were realized without mutual interference in their coexistence system by means of the assistance of ATP. The detection limits were 2.3 x 10(-7) M for Cu2+ and 1.8 x 10(-6) M for Zn2+, respectively. The sensing mechanism was elucidated by binding MS spectra, fluorescence Job's plot and H-1 NMR spectra. Moreover, OPBS exhibited good bioimaging performance and the in-situ sensing abilities for Cu2+ and Zn2+ in living cells, suggesting the application potential for detecting Cu2+ and Zn2+ in both vitro assay and vivo environment. (C) 2021 Elsevier B.V. All rights reserved.
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页数：7
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