Flavylium Polymethine Fluorophores for Near‐ and Shortwave Infrared Imaging
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
- Department of Chemistry Massachusetts Institute of Technology Cambridge MA 02139 USA
Abstract Bright fluorophores in the near‐infrared and shortwave infrared (SWIR) regions of the electromagnetic spectrum are essential for optical imaging in vivo. 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 1045 nm. 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 in vivo imaging.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- SC0001088
- OSTI ID:
- 1390340
- Journal Information:
- Angewandte Chemie, Journal Name: Angewandte Chemie Vol. 129 Journal Issue: 42; ISSN 0044-8249
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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