Highly selective rhodamine-based fluorescence turn-on chemosensor for Al3+ ion

被引：36

作者：

Manjunath, Rangasamy ^{[1
]}

Kannan, Palaninathan ^{[1
]}

机构：

[1] Anna Univ, Dept Chem, Madras 600025, Tamil Nadu, India

来源：

OPTICAL MATERIALS | 2018年 / 79卷

关键词：

Rhodamine-B; Chemosensor; Aluminum (III) ion; Naked eye detection; ALUMINUM; SENSOR; SPECIATION;

D O I：

10.1016/j.optmat.2018.03.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new rhodamine-based colorimetric and fluorescent turn-on chemosensor (L) has been designed and synthesized for selective and sensitive detection of Al3+ ion. The sensing behavior toward metal ion was investigated by UV/Vis and fluorescence spectroscopy. Upon addition of Al3+ ion to solution of L provided a visual color change as well as significantly fluorescent enhancement, while other metal ions including Na+, Mg2+, K+, Mn2+, Fe3+, Ni2+, Cu2+, Zn2+, Pb2+, Cd2+ and Hg2+ ions fails to generate a distinct color and spectral changes, the distinct color change and rapid switch-on fluorescence also provide naked eye detection for Al2+ ion. The mechanism involved equilibrium between non-fluorescent spirocyclic form and highly fluorescent ring open form process was utilized and 1:2 stoichiometry for L-Al3+ complex formed with an association constant of 1.42 x 10(3) M-1. Moreover, chemosensor L was applied for living cell imaging and confirmed that can be used as a fluorescent probe for monitoring Al3+ ion in living cells. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：38 / 44

页数：7

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