Development of a ratiometric fluorescent zinc ion probe in near-infrared region, based on tricarbocyanine chromophore

被引:323
作者
Kiyose, Kazuki
Kojima, Hirotatsu
Urano, Yasuteru
Nagano, Tetsuo
机构
[1] Univ Tokyo, Grad Sch Pharmaceut Sci, Bunkyo Ku, Tokyo 1130033, Japan
[2] JST Agcy, CREST, Kawaguchi, Saitama, Japan
[3] JST Agcy, PRESTO, Kawaguchi, Saitama, Japan
关键词
D O I
10.1021/ja060399c
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Novel ratiometric fluorescent probes for Zn2+ in the near-infrared region, based on a tricarbocyanine chromophore, have been designed, synthesized, and evaluated. Upon addition of Zn2+, a 44 nm red shift of the absorption maximum was observed, which indicates that this probe could work as a ratiometric probe for Zn2+. This change is due to the difference in the electron-donating ability of the amine substituent before and after reaction with Zn2+. This fluorescence modulation of amine-substituted tricarbocyanines should be applicable to dual-wavelength measurement of various biomolecules or enzyme activities. Copyright © 2006 American Chemical Society.
引用
收藏
页码:6548 / 6549
页数:2
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