An Efficient Fluorescence "Turn-On" Chemosensor Comprising of Coumarin and Rhodamine Moieties for Al3+ and Hg2+

被引：17

作者：

Acharyya, Samik ^{[1
]}

Gharami, Saswati ^{[1
]}

Patra, Lakshman ^{[1
]}

Mondal, Tapan Kumar ^{[1
]}

机构：

[1] Jadavpur Univ, Dept Chem, Kolkata 700032, India

来源：

JOURNAL OF FLUORESCENCE | 2017年 / 27卷 / 06期

关键词：

Fluorescence turn-on sensor; Rhodamine-coumarin based chemosensor; Detection of Hg2+ and Al3+; DFT calculation; DENSITY-FUNCTIONAL THEORY; EXCITATION-ENERGIES; ALZHEIMERS-DISEASE; BREAST-CANCER; ALUMINUM; MERCURY; IONS; MOLECULES; MODEL; APPROXIMATION;

D O I：

10.1007/s10895-017-2144-9

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A potent fluorescence 'turn-on' receptor (HL) based on rhodamine and coumarin moieties for the detection of Hg2+ and Al3+ is synthesized by condensation of rhodamine 6G hydrazide and 4-hydroxy-3-acetylcoumarin. In presence of Al3+ and/or Hg2+ the receptor (HL) exhibits deep pink colouration and a sharp band at 528 nm is appeared in UV-vis titration. Upon gradual addition of Al3+ and/or Hg2+ to the solution of HL significant enhancement of fluorescence intensity is observed at 564 nm in MeCN:H2O (1:5, v/v) medium. The receptor is strongly bound to Al3+ and/or Hg2+ and the association constants (K-a) are found to be 1.74 x 10(4) and 1.04 x 10(4) M- 1 for Al3+ and Hg2+ respectively.

引用

页码：2051 / 2057

页数：7

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