基于多价罗丹明配体的汞离子开启型荧光化学传感器

Turn-on fluorescent chemosensor for Hg²⁺ based on multivalent rhodamine ligands.

作者信息

Wang Xuemei, Iqbal Mudassir, Huskens Jurriaan, Verboom Willem

机构信息

Laboratory of Molecular Nanofabrication, MESA+ Institute for Nanotechnology, University of Twente, Enschede 7500 AE, The Netherlands.

出版信息

Int J Mol Sci. 2012 Dec 7;13(12):16822-32. doi: 10.3390/ijms131216822.

DOI:10.3390/ijms131216822

PMID:23222686

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3546724/

Abstract

Rhodamine-based fluorescent chemosensors 1 and 2 exhibit selective fluorescence enhancement to Fe3+ and Hg2+ over other metal ions at 580 nm in CH(3)CN/H(2)O (3/1, v/v) solution. Bis(rhodamine) chemosensor 1, under optimized conditions (CH(3)CN/HEPES buffer (0.02 M, pH = 7.0) (95/5, v/v)), shows a high selectivity and sensitivity to Hg2+, with a linear working range of 0-50 μM, a wide pH span of 4-10, and a detection limit of 0.4 μM Hg2+.

摘要

基于罗丹明的荧光化学传感器1和2在CH(3)CN/H(2)O（3/1，v/v）溶液中于580 nm处对Fe3+和Hg2+表现出相对于其他金属离子的选择性荧光增强。双（罗丹明）化学传感器1在优化条件下（CH(3)CN/HEPES缓冲液（0.02 M，pH = 7.0）（95/5，v/v））对Hg2+具有高选择性和灵敏度，线性工作范围为0 - 50 μM，pH跨度为4 - 10，Hg2+的检测限为0.4 μM。