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Reversible and amplified fluorescence quenching of a photochromic polythiophene

TitleReversible and amplified fluorescence quenching of a photochromic polythiophene
Publication TypeJournal Article
Year of Publication2008
AuthorsFinden, J, Kunz, TK, Branda, NR, Wolf, MO
JournalADVANCED MATERIALS
Volume20
Pagination1998+
Date PublishedMAY 19
ISSN0935-9648
Abstract

Amplification of fluorescence quenching of a polythiophene is optically triggered by converting pendant dithienylethene (DTE) photoswitches to their ring-closed isomers using UV light. The effect can be reversed with visible light, which regenerates the original DTE isomer. Amplification attributed to the high mobility of electronic excited states in conjugated polymers, which facilitates energy transfer to a ring-closed DTE.

DOI10.1002/adma.200702455