Synthesis and evaluation of arylfuryl-bis(indolyl)methanes as selective chromogenic and fluorogenic ratiometric receptors for mercury ion in aqueous solution

被引：26

作者：

Batista, Rosa M. F. ^{[1
]}

Costa, Susana P. G. ^{[1
]}

Silva, Regina M. P. ^{[1
]}

Lima, Nuno E. M. ^{[1
]}

Raposo, M. Manuela M. ^{[1
]}

机构：

[1] Univ Minho, Ctr Chem, P-4710057 Braga, Portugal

来源：

DYES AND PIGMENTS | 2014年 / 102卷

关键词：

Bis(indolyl)methanes; Arylfuran; Ratiometric fluorogenic chemosensors; Hg2+; Direct visual detection; Aqueous solution; COLORIMETRIC SENSORS; FLUORESCENT SENSORS; ANION RECEPTOR; INDOLE; CU2+; CHEMOSENSORS; MOLECULE; BIS(INDOLYL)METHANE; DERIVATIVES; REAGENTS;

D O I：

10.1016/j.dyepig.2013.11.008

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A series of arylfuryl-bis(indolyl)methane derivatives were prepared in good yields by electrophilic substitution of indole with furyl aldehydes through a simple and mild hydrogensulfate-catalysed reaction and studied as chemosensors for transition metal cations by performing spectrophotometric and spectrofluorimetric titrations. Selective recognition of Hg2+ was achieved in organic aqueous mixture (CH3CN/H2O, 7:3) for the various receptors, with an easily detectable colour change from colourless to purple and also through a fluorescence quenching, making these compounds suitable for dual chromo- and fluorogenic ratiometric sensing of Hg2+. The binding stoichiometry between the receptors and Hg2+ was found to be 1:1. The binding process was also followed by H-1 NMR titrations which corroborated the previous findings. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：293 / 300

页数：8

共 41 条

[1] Synthesis and evaluation of new thienyl and bithienyl-bis-indolylmethanes as colorimetric sensors for anions [J].