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Toward Fluorescent Memories with Nondestructive Readout: Photoswitching of Fluorescence by Intramolecular Electron Transfer in a Diaryl Ethene‐Perylene Bisimide Photochromic System
Author(s) -
Berberich Martin,
Krause AnaMaria,
Orlandi Michele,
Scandola Franco,
Würthner Frank
Publication year - 2008
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.200802007
Subject(s) - photochromism , perylene , diarylethene , photochemistry , fluorescence , photoinduced electron transfer , intramolecular force , electron transfer , chemistry , materials science , optoelectronics , optics , physics , organic chemistry
Flicking a switch : Photoinduced electron transfer (PET) occurs between the perylene and the closed (but not the open) form of the diarylethene unit in a prototype optical memory system based on a photochromic diarylethene‐perylene bisimide dyad (see picture). This allows three different wavelengths to be used for the read, write, and erase steps without destructive readout occurring by photochromic cycloreversion.