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
收藏
页码：585 / 593
页数：9
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