Fluorescence Signal Amplification by Cation Exchange in Ionic Nanocrystals

被引：59

作者：

Li, Jishan ^{[1
]}

Zhang, Tierui ^{[1
]}

Ge, Jianping ^{[1
]}

Yin, Yadong ^{[1
]}

Zhong, Wenwan ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2009年 / 48卷 / 09期

关键词：

fluorescence; ion exchange; ionic nanocrystals; sensors; signal amplification; QUANTUM DOTS; CALCIUM; SENSORS; BIOSENSORS; RHOD-5N; AGENTS;

D O I：

10.1002/anie.200805710

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Figure Presented) Lighting-up time: A cation-exchange reaction releases thousands of divalent cations from nonfluorescent CdSe ionic crystals and triggers fluorescence of originally nonfluorescent Fluo-4 fluorophores to obtain a large fluorescence amplification (see picture) and a low detection limit in bioassays. simple, with a large dye-to-reporter labeling ratio, and flexible in selection of nanocrystals and fluorophores. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：1588 / 1591

页数：4

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