Synthesis and Properties of Novel Fluorescent Switches
- 4 June 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Organic Chemistry
- Vol. 70 (14), 5545-5549
- https://doi.org/10.1021/jo050540k
Abstract
Photochromic dithienylethene moieties were covalently attached to fluorescent 4,4-difluoro-8-(4‘-iodophenyl)-1,3,5,7-tetramethyl-4-bora-3a,4a-diaza-s-indacene (iodo-BODIPY) via a phenylacetylene linker. UV light induced isomerization of the photochrome results in significant decrease in fluorescence intensity. This fluorescence can be recovered with visible light. Steady-state fluorescence measurements demonstrate that the emission of the dye can be modulated by external light. An intramolecular energy transfer mechanism accounts for the fluorescence quenching in the UV light produced isomers.Keywords
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