New branched oligophenylenefluorenes: Synthesis and spectral-luminescent properties

The fluorenyl dendrimers 1,3,5-tris(2-fluorenyl)benzene and 1,3,5-tris[2-(9,9-dioctylfluorenyl)]benzene, which are model compounds for branched oligophenylenefluorenes, are prepared via the cyclocondensation of unsubstituted and dioctyl-substituted acetylfluorenes, respectively. Branched oligophenyl...

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Bibliographic Details
Published in:Polymer science. Series B 2011-12, Vol.53 (11-12), p.578-585
Main Authors: Khotina, I. A., Shapovalov, A. V., Kushakova, N. S., Sergeev, A. M., Peregudov, A. S., Rusanov, A. L., Babich, S. A., Bystrova, N. A., Kovalev, A. I.
Format: Article
Language:English
Subjects:
Agglomeration
Branched
Chemistry
Chemistry and Materials Science
Dendrimers
Fluorescence
Functional Polymers
Mathematical models
Oligomers
Polymer Sciences
Spectra
Synthesis
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Summary:The fluorenyl dendrimers 1,3,5-tris(2-fluorenyl)benzene and 1,3,5-tris[2-(9,9-dioctylfluorenyl)]benzene, which are model compounds for branched oligophenylenefluorenes, are prepared via the cyclocondensation of unsubstituted and dioctyl-substituted acetylfluorenes, respectively. Branched oligophenylenefluorenes are synthesized via the copolycondensation of phenyl-bis(pinacol diborate) with tribromoarylenes in the presence of the ferrocenyl complex of Pd via the Suzuki reaction A 3 + B 2 . For solutions of model compounds and oligophenylenefluorenes, absorption and fluorescence spectra are measured and interpreted. In the case of the branched oligomers, no aggregation of luminophore fragments occurs, an advantageous feature that distinguishes the branched oligomers from well-known linear luminescent polymers.
ISSN:1560-0904
1555-6123
DOI:10.1134/S1560090411110030