Rhodamine-based Hg2+-selective chemodosimeter in aqueous solution:: Fluorescent OFF-ON

被引：452

作者：

Wu, Jia-Sheng ^{[1
]}

Hwang, In-Chul

Kim, Kwang S.

Kim, Jong Seung

机构：

[1] Dankook Univ, Dept Chem, Seoul 140714, South Korea

[2] Pohang Univ Sci & Technol, Dept Chem, Pohang 790784, South Korea

[3] Pohang Univ Sci & Technol, Basic Sci Res Inst, Pohang 790784, South Korea

来源：

ORGANIC LETTERS | 2007年 / 9卷 / 05期

关键词：

D O I：

10.1021/ol070109c

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

N-(Rhodamine-6G)lactam-N'-phenylthiourea-ethylenediamine (1) was developed as a fluorescent and colorimetric chemodosimeter in aqueous solution with a broad pH span (5 similar to 10) and high selectivity toward Hg2+ but no significant response toward other competitive cations, such as Fe2+, Co2+, Ni2+, Cu2+, Zn2+, Pb2+, Cd2+, Ca2+, Mg2+, K+, Na+, etc. The Hg2+-promoted ring opening of spirolactam of the rhodamine moiety induced cyclic guanylation of the thiourea moiety, which resulted in the dual chromo- and fluorogenic observation (OFF-ON).

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页码：907 / 910

页数：4

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