Bridging the Visible: The Modulation of the Absorption by More than 450 nm

The coexistence of 18 isomers, identified by NMR spectroscopy and gathered into six states with very different absorption properties, is observed upon irradiation with selective wavelengths of a triphotochromic system joining two naphthopyran entities through a dithienylethene bridge. The sequential...

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Bibliographic Details
Published in:Organic letters 2010-09, Vol.12 (18), p.4090-4093
Main Authors: Delbaere, Stéphanie, Vermeersch, Gaston, Frigoli, Michel, Mehl, Georg H
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemical Sciences
or physical chemistry
Theoretical and
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Summary:The coexistence of 18 isomers, identified by NMR spectroscopy and gathered into six states with very different absorption properties, is observed upon irradiation with selective wavelengths of a triphotochromic system joining two naphthopyran entities through a dithienylethene bridge. The sequential electronic coupling of photochromic groups resulted in an absorption behavior reaching far into NIR.
ISSN:1523-7060
1523-7052
DOI:10.1021/ol101672v