Photophysics of fluorene copolymers : Control of fluorescence and charge separation by the presence of carbazole, oxadiazole, or biphenyl units

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DOIResolve DOI: http://doi.org/10.1021/jp900556z
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TypeArticle
Journal titleThe Journal of Physical Chemistry C
Volume113
Issue9
Pages84718477; # of pages: 7
AbstractA set of fluorene copolymers designed to introduce electron donor/acceptor structures in the polymer chain that could eventually produce more efficient charge separation with long lifetimes has been prepared. To validate our approach, herein we report photoluminescence and laser flash photolysis measurements of the series of alternating specially functionalized fluorene copolymers. The copolymers contain 9,9-dioctylfluorene and N-octylcarbazole, oxadiazole, and oxadiazole-octafluorobiphenyl-oxadiazole units. It appears that the copolymer with the longest charge separated state lifetime and the highest charge separation quantum yield of the series is an alternating copolymer of a N-octylcarbazole and trifluorene units in which two fluorenes were attached with hydroxyhexyl side groups and the central fluorene with octyl side group at C-9 positions, respectively. These photophysical data suggest that this polymer a good candidate for photovoltaic cell and polymer light-emitting diode applications.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Chemical Process and Environmental Technology
Peer reviewedYes
NRC number52077
NPARC number15322649
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Record identifier2242d56b-2b8a-4a11-9bff-a2970a355c89
Record created2010-05-19
Record modified2016-05-09
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