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Title: Solvent-dependent photophysical properties of borondipyrromethene dyes in solution
Authors: Qin, WW ×
Rohand, Taoufik
Baruah, Mukulesh
Stefan, Alina
Van der Auweraer, Mark
Dehaen, Wim
Boens, Noël #
Issue Date: Mar-2006
Publisher: Elsevier
Series Title: Chemical Physics Letters vol:420 issue:4-6 pages:562-568
Abstract: Four fluorescent dyes derived from 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) with unusual substituents (chloro, methoxy, and malonate) at the 3,5-positions have been synthesized by a novel nucleophilic substitution reaction of 3,5-dichloroBODIPY. Their solvent-dependent photophysical properties have been investigated by means of UV/Vis absorption, steady-state and time-resolved fluorimetry. For each compound, the fluorescence quantum yield and lifetime are lower in solvents with higher polarity due to an increase in the rate of nonradiative deactivation. The fluorescence rate constants are in the (1.6-2.0) x 10(8) s(-1) range. The borondipyrro-methene derivatives show small Stokes shifts (between 440 and 490 cm(-1)) and narrow absorption (FWHM between 710 and 820 cm(-1)) and emission bands. (c) 2006 Elsevier B.V. All rights reserved.
ISSN: 0009-2614
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
Molecular Design and Synthesis
Chemistry - miscellaneous
× corresponding author
# (joint) last author

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