Near-infrared-absorbing squaraine dyes containing 2,3-dihydroperimidine terminal groups
- 1 January 1993
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 5,p. 452-454
- https://doi.org/10.1039/c39930000452
Abstract
Condensation of 2,3-dihydroperimidines with squaric acid under conditions of azeotropic removal of water affords a new class of diarylsquaraine dyes with intense absorption bands at ca. 800nm.Keywords
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