Novel Highly Selective Fluorescent Chemosensors for Hg(II)

doi:10.1007/s40242-013-2363-9

高等学校化学研究 ›› 2013, Vol. 29 ›› Issue (4): 657-662.doi: 10.1007/s40242-013-2363-9

Novel Highly Selective Fluorescent Chemosensors for Hg(II)

SU Wen-qi, YANG Bing-qin

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

收稿日期:2012-09-19 修回日期:2012-12-06 出版日期:2013-08-01 发布日期:2013-07-15
通讯作者: YANG Bing-qin E-mail:yangbq@nwu.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China(No.21172178).

Novel Highly Selective Fluorescent Chemosensors for Hg(II)

SU Wen-qi, YANG Bing-qin

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

Received:2012-09-19 Revised:2012-12-06 Online:2013-08-01 Published:2013-07-15
Contact: YANG Bing-qin E-mail:yangbq@nwu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(No.21172178).

摘要/Abstract

摘要：

Based on Rhodamine, two novel fluorescent Hg²⁺ chemosensors(R1, R2) were synthesized from inexpensive starting materials. They 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 made. The chemosensors were designed with a photoinduced electron transfer(PET) mechanism. After binding to Hg²⁺which blocks the PET process, the fluorescence intensity of the chemosensors was enhanced by up to 15-fold. They 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-HCl/sodium phosphate buffer. The fluorescence enhancement of R2 towards Hg²⁺maintains stable in wide pH span(6.4―8.8) aqueous solutions.

关键词: Fluorescent chemosensor, Mercury ion, Sensor, Rhodamine fluorophore, Fluorescence intensity

Abstract:

Key words: Fluorescent chemosensor, Mercury ion, Sensor, Rhodamine fluorophore, Fluorescence intensity

SU Wen-qi, YANG Bing-qin. Novel Highly Selective Fluorescent Chemosensors for Hg(II)[J]. 高等学校化学研究, 2013, 29(4): 657-662.

SU Wen-qi, YANG Bing-qin. Novel Highly Selective Fluorescent Chemosensors for Hg(II)[J]. Chemical Research in Chinese Universities, 2013, 29(4): 657-662.

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Novel Highly Selective Fluorescent Chemosensors for Hg(II)

Novel Highly Selective Fluorescent Chemosensors for Hg(II)

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