Aggregation induced emission-excited state intramolecular proton transfer based "off-on" fluorescent sensor for Al3+ ions in liquid and solid state

被引：48

作者：

Kumar, Gulshan ^{[1
]}

Paul, Kamaldeep ^{[1
]}

Luxami, Vijay ^{[1
]}

机构：

[1] Thapar Univ, Sch Chem & Biochem, Patiala, Punjab, India

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2018年 / 263卷

关键词：

ESIPT; AIE; Azine; Schiff base; Chemosensor; ESIPT CHARACTERISTICS; AIE; PROBE; CHEMOSENSOR; ZN2+;

D O I：

10.1016/j.snb.2018.02.078

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Benzophenone azine based schiff base exhibiting AIE and ESIPT phenomenon has been synthesised and studied the photophysical behaviour towards detection of AP' ions. The results showed that compound 2 exhibit feeble excited state intramolecular proton transfer emission in CH3CN and undergo aggregation induced emission in >70% H2O-CH3 CN. The compound 2 shows significant hydrodynamic diameter change from 20 nm to 200 nm upon increasing the H2O volume ratio in CH3 CN. Compound 2 shows colorimetric and "off-on" emission response for Al3+, with detection limit of 2.7 x 10(-7)M in CH3OH. The association of compound 2 to Al3+ also causes restriction in intramolecular motion induced emission. The hydrodynamic diameter of compound 2 increases from 335 nm to 625 nm in the presence of Al3+ ion in CH3OH. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：585 / 593

页数：9

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