Enhanced Aggregation Emission of Vinyl Polymer Containing Tetraphenylthiophene Pendant Group

In this study, poly[2-(4′-vinylphenyl)-3,4,5-triphenylthiophene] (PTP) with pendant tetraphenylthiophene (TP) groups was synthesized to study its aggregation-induced emission (AIE) property. The solution emission spectra of the PTP nanoaggregates contain discernible monomer and aggregate bands with...

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Bibliographic Details
Published in:Journal of physical chemistry. C 2011-04, Vol.115 (13), p.5958-5965
Main Authors: Chien, Rong-Hong, Lai, Chung-Tin, Hong, Jin-Long
Format: Article
Language:English
Subjects:
C: Electron Transport, Optical and Electronic Devices, Hard Matter
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Summary:In this study, poly[2-(4′-vinylphenyl)-3,4,5-triphenylthiophene] (PTP) with pendant tetraphenylthiophene (TP) groups was synthesized to study its aggregation-induced emission (AIE) property. The solution emission spectra of the PTP nanoaggregates contain discernible monomer and aggregate bands with their relative intensity dependent on the extent of aggregation. Increasing solution concentration or nonsolvent content resulted in the increase of the aggregate to monomer emission ratio. In addition, the aggregate to monomer emission ratio decreases when the PTP film was heated across the glass transition temperature (165 °C). Single-chain conformation of PTP was simulated to probe for the possible arrangements of the pendant TP fluorophores in the isolated (monomer) and the aggregate domains.
ISSN:1932-7447
1932-7455
DOI:10.1021/jp110629t