title: A Selective Colorimetric and Turn-on Fluorescent Chemosensor for Hg2+in Aqueous Solution.
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 × 109M-1, and the detection limit for Hg2+was found to be 0.24 ppm.
authors: Department of Chemistry, National Changhua University of Education, Changhua, 50058, Taiwan.
authors: Yi-Ru
authors: YR
authors: Chiou
authors: Department of Medical Applied Chemistry, Chung Shan Medical University, No.110, Sec. 1, Jianguo N. Rd, Taichung City, 40201, Taiwan.
authors: Chin-Feng
authors: CF
authors: Wan
authors: Department of Chemistry, National Changhua University of Education, Changhua, 50058, Taiwan. antai@cc.ncue.edu.tw.
authors: An-Tai
authors: AT
authors: Wu
keywords: Colorimetric; Fluorescence; Thiophene; Turn-on