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Literature DB >> 27796626

A Selective Colorimetric and Turn-on Fluorescent Chemosensor for Hg²⁺ in Aqueous Solution.

Yi-Ru Chiou¹, Chin-Feng Wan², An-Tai Wu³.

Abstract

A simple colorimetric and turn-on fluorescence receptor FT (thiophene appended fluorescein-hydrazone derivative) was prepared and its cation-sensing properties were investigated. Receptor FT displayed a selective colorimetric change (from colorless to orange color) upon binding to Hg2+ in DMSO/H2O (1:9, v/v) solution. The association constant of FT-Hg2+ complex was calculated to be 3.03 × 109 M-1, and the detection limit for Hg2+ was found to be 0.24 ppm.

Entities: Chemical Gene

Keywords: Colorimetric; Fluorescence; Thiophene; Turn-on

Year: 2016 PMID： 27796626 DOI： 10.1007/s10895-016-1960-7

Source DB: PubMed Journal: J Fluoresc ISSN： 1053-0509 Impact factor: 2.217

23 in total

1. A highly selective and sensitive fluorescent probe for Hg(2+) imaging in live cells based on a rhodamine-thioamide-alkyne scaffold.

Authors: Weiying Lin; Xiaowei Cao; Yundi Ding; Lin Yuan; Lingliang Long
Journal: Chem Commun (Camb) Date: 2010-04-08 Impact factor: 6.222

A Selective Colorimetric and Turn-on Fluorescent Chemosensor for Hg²⁺ in Aqueous Solution.

1. A highly selective and sensitive fluorescent probe for Hg(2+) imaging in live cells based on a rhodamine-thioamide-alkyne scaffold.

2. Hg2+ selective fluorescent and colorimetric sensor: its crystal structure and application to bioimaging.

3. Cognitive performance of children prenatally exposed to "safe" levels of methylmercury.

4. In vivo monitoring of mercury ions using a rhodamine-based molecular probe.

5. New fluorescent rhodamine hydrazone chemosensor for Cu(II) with high selectivity and sensitivity.

6. Upper rim allyl- and arylazo-coupled calix[4]arenes as highly sensitive chromogenic sensors for Hg2+ ion.

7. A colorimetric and fluorometric dual-model assay for mercury ion by a molecule.

8. Cu(II)-selective green fluorescence of a rhodamine-diacetic acid conjugate.

9. Metal ion induced FRET OFF-ON in tren/dansyl-appended rhodamine.

10. A selective fluorescence-on reaction of spiro form fluorescein hydrazide with Cu(II).

1. Thiophene Appended Dual Fluorescent Sensor for Detection of Hg²⁺ and Cysteamine.