Highly selective and sensitive twin-cyano-stilbene-based two-photon fluorescent probe for mercury (ii) in aqueous solution with large two-photon absorption cross-section

被引：44

作者：

Huang, Chibao ^{[1
,3
]}

Fan, Jiangli ^{[1
]}

Peng, Xiaojun ^{[1
]}

Lin, Ziyang ^{[2
]}

Guo, Baoping ^{[2
]}

Ren, Anxiang ^{[3
]}

Cui, Jingqiang ^{[1
]}

Sun, Shiguo ^{[1
]}

机构：

[1] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China

[2] Shenzhen Univ, Minist Educ & Guang Dong Prov, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China

[3] Shaoguan Univ, Yingdong Bioengn Coll, Dept Agr Engn, Shaoguan 512005, Peoples R China

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2008年 / 199卷 / 2-3期

基金：

美国国家科学基金会;

关键词：

fluorophore; two-photon absorption cross-section; ionophore; sensor; twin-cyano stilbene;

D O I：

10.1016/j.jphotochem.2008.05.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The fluorophore derived from stilbene with two cyano groups in a single aromatic ring shows reasonably large two-photon absorption cross-section and emits strong two-photon fluorescence. A water-soluble two-photon sensor composed of the fluorophore containing bis[2-(2-hydroxyethylsulfanyl)ethyl]amino group (ionophore) has a very high sensitivity and selectivity for Hg2+ in water. It can be used to detect trace Hg2+ in near neutral aqueous solution (pH > 6.5), and its binding constant (log K) for Hg2+ is as high as 5.72 +/- 0.03. Nitrogen atom property and the sulfur atom number on the ionophore are believed to be responsible for the unique selectivity of probe 1 for Hg2+. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：144 / 149

页数：6

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