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Phospha-RosIndolizine Dye with Shortwave Infrared (SWIR) Absorption and Emission
Matthew A Saucier1, Nicholas A Kruse1, Brennan E Seidel1
1Department of Chemistry and Biochemistry, University of Mississippi, Coulter Hall, University, Mississippi 38677, United States.
Abstract:
Shortwave infrared (SWIR, 1000-1700 nm) absorbing and emitting dyes are needed for infrared diodes and sensors used in a wide variety of industrial and medical applications. Herein, an electron-withdrawing phosphine oxide (P═O) substituted xanthene is coupled with strong indolizine donors to produce a SWIR absorbing (λabs = 1294 nm in DCM) and emitting (λemis = 1450 nm in DCM) dye called PRos1450. The unique properties of this dye are characterized via photophysical, electrochemical, and computational analyses.
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