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Flavylium Polymethine Fluorophores for Near‐ and Shortwave Infrared Imaging

Journal Article · · Angewandte Chemie (International Edition)
 [1];  [2];  [2];  [2];  [1];  [1];  [2];  [1]
  1. Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
  2. 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:
1390339
Alternate ID(s):
OSTI ID: 1537452
Journal Information:
Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 42 Vol. 56; ISSN 1433-7851
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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Flavylium Polymethine Fluorophores for Near‐ and Shortwave Infrared Imaging
Journal Article · Thu Sep 14 00:00:00 EDT 2017 · Angewandte Chemie · OSTI ID:1390340

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