Flavylium Polymethine Fluorophores for Near- and Shortwave Infrared Imaging

被引:348
作者
Cosco, Emily D. [1 ]
Caram, Justin R. [2 ]
Bruns, Oliver T. [2 ]
Franke, Daniel [2 ]
Day, Rachael A. [1 ]
Farr, Erik P. [1 ]
Bawendi, Moungi G. [2 ]
Sletten, Ellen M. [1 ]
机构
[1] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA
[2] MIT, Dept Chem, Cambridge, MA 02139 USA
关键词
fluorescent dyes; imaging agents; near-infrared; polymethines; shortwave infrared; HEPTAMETHINE CYANINE DYES; FLUORESCENT LABELS; QUANTUM DOTS; PHOTOLUMINESCENCE; PHOTOSTABILITY;
D O I
10.1002/anie.201706974
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Bright fluorophores in the near-infrared and shortwave infrared (SWIR) regions of the electromagnetic spectrum are essential for optical imaging invivo. In this work, we utilized a 7-dimethylamino flavylium heterocycle to construct a panel of novel red-shifted polymethine dyes, with emission wavelengths from 680 to 1045nm. Photophysical characterization revealed that the 1- and 3-methine dyes display enhanced photostability and the 5- and 7-methine dyes exhibit exceptional brightness for their respective spectral regions. A micelle formulation of the 7-methine facilitated SWIR imaging in mice. This report presents the first polymethine dye designed and synthesized for SWIR invivo imaging.
引用
收藏
页码:13126 / 13129
页数:4
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