A novel rhodamine-based colorimetric chemodosimeter for the rapid detection of Al3+ in aqueous methanol: fluorescent 'OFF-ON' mechanism

被引：34

作者：

Dhara, Anamika ^{[1
]}

Jana, Atanu ^{[1
]}

Konar, Saugata ^{[1
]}

Ghatak, Sumanta Kumar ^{[1
]}

Ray, Sangita ^{[1
]}

Das, Kinsuk ^{[2
]}

Bandyopadhyay, Anasuya ^{[1
]}

Guchhait, Nikhil ^{[1
]}

Kar, Susanta K. ^{[1
]}

机构：

[1] Univ Calcutta, Univ Coll Sci, Dept Chem, Kolkata 700009, India

[2] Haldia Govt Coll, Dept Chem, Debhog Purba Midnapur 721657, India

来源：

TETRAHEDRON LETTERS | 2013年 / 54卷 / 28期

关键词：

ALUMINUM; CHEMOSENSOR; SENSORS; DESIGN; IONS; HG2+;

D O I：

10.1016/j.tetlet.2013.04.103

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A novel rhodamine-based chemosensor, 3',6'-bis(diethylamino)-2-(2,7-dimethoxy-9H-fluoren-9-ylidene)amino)spiro[isoindoline-1,9'-xanthen]-3-one (1) for aluminum ion, was designed and synthesized. Compound 1 is an orange colored, weak fluorescent compound which was synthesized via one-step facile reaction of rhodamine B hydrazide with 2,7-dimethoxy-9H-fluoren-9-one in MeOH. When A1(3+) salt was added in methanol:water (30:70, v/v) solution then spirolactum ring of 1 was opened. The absorbance and fluorescence of the mixed solution were increased dramatically because of the opening of the lactum ring. Thus, signal transduction occurred via reversible CHEF (chelation-enhanced fluorescence) mechanism in the range 580-584 nm. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：3630 / 3634

页数：5

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