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Selective NIR chromophores: Bis(Pyrrolopyrrole) Cyanines
Author(s) -
Fischer Georg M.,
Daltrozzo Ewald,
Zumbusch Andreas
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201004829
Subject(s) - chromophore , absorption (acoustics) , fluorescence , extinction (optical mineralogy) , narrowband , photochemistry , materials science , near infrared spectroscopy , ideal (ethics) , chemistry , optics , mineralogy , physics , composite material , philosophy , epistemology
Very invisible: Bis(pyrrolopyrrole) cyanines are extended chromophores based on diketopyrrolopyrroles (general structure shown). The compounds are characterized by extremely high extinction coefficients, narrowband absorption in the near‐IR range, and strong fluorescence around 1 μm. Since absorption in the visible region is negligible, they approach the ideal of selective NIR absorbers.