Novel Highly Selective Fluorescent Chemosensors for Hg（Ⅱ）

作     者：SU Wen-qi YANG Bing-qin 

作者机构：Key Laboratory of Synthetic and Natural Functional Molecule Chemistry Ministry of Education Department of Chemistry Northwest University Xi'an 710069 P. R. China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：2013年第29卷第4期

页      面：657-662页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 080202[工学-机械电子工程] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 0802[工学-机械工程] 

基　　金：Supported by the National Natural Science Foundation of China(No.21172178) 

主　　题：Fluorescent chemosensor Mercury ion Sensor Rhodamine fluorophore Fluorescence intensity 

摘      要：Based on Rhodamine,two novel fluorescent Hg2＋ chemosensors（R1,R2） were synthesized from inexpensive starting *** were designed and synthesized with o-aminophenol and o-phenylenediamine derivatives as the Hg2＋ chelator,the comparison between the photophysical properties of two chemosensor molecules was *** chemosensors were designed with a photoinduced electron transfer（PET） *** binding to Hg2＋ which blocks the PET process,the fluorescence intensity of the chemosensors was enhanced by up to *** exhibit very strong fluorescence responses to Hg2＋ and have remarkably higher selectivity for Hg2＋ than for other metal ions including K＋,Na＋,Ca2＋,Mg2＋,Cd2＋,Mn2＋,Ni2＋,Co2＋,Zn2＋,Cu2＋,Cr3＋,Fe3＋,pb2＋,Ag＋,Al3＋,Fe2＋ and Sn2＋ in Tris-HC1/sodium phosphate *** fluorescence enhancement of R2 towards Hg2＋ maintains stable in wide pH span（6.4-8.8） aqueous solutions.