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Proceedings Paper

Studies of Raman scattering in novel disubstituted acetylene polymers
Author(s): Akihiko Fujii; Maxim N. Shkunov; Z. Valy Vardeny; Kazuya Tada; Katsumi Yoshino; Masahiro Teraguchi; Toshio Masuda
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Paper Abstract

We have studied resonant and non-resonant Raman scattering spectra in thin films of novel disubstituted acetylene polymers such as poly(1-ethyl-2-phenylacetylene) (PEtPA), poly(1-n-hexyl-2-phenylacetylene) (PHxPA) and poly(1-phenyl- 2-p-n-butylphenylacetylene) (PDPA-nBu), which possess high photoluminescence (PL) quantum efficiency. We found that the Raman scattering frequency dispersion is smaller in disubstituted acetylene polymers than in other acetylene polymers, in agreement with many other strongly luminescent polymers. Assuming the model of short polyene conjugation length in these acetylene polymers, we can obtain the conjugation length (N) for each polymer from the respective phonon frequency of the carbon-carbon double bond; we obtained N equals 7 for PDPA-nBu, and N equals 5 or 6 for PHxPA and PEtPA. The related energies of 11Bu and 21Ag can be estimated from these N and are in good agreement with the respective absorption and PL spectra of the various disubstituted polymers.

Paper Details

Date Published: 1 December 1997
PDF: 11 pages
Proc. SPIE 3145, Optical Probes of Conjugated Polymers, (1 December 1997); doi: 10.1117/12.295540
Show Author Affiliations
Akihiko Fujii, Univ. of Utah (United States)
Osaka Univ. (Japan)
Maxim N. Shkunov, Univ. of Utah (United States)
Z. Valy Vardeny, Univ. of Utah (United States)
Kazuya Tada, Osaka Univ. (Japan)
Katsumi Yoshino, Osaka Univ. (Japan)
Masahiro Teraguchi, Kyoto Univ. (Japan)
Toshio Masuda, Kyoto Univ. (Japan)

Published in SPIE Proceedings Vol. 3145:
Optical Probes of Conjugated Polymers
Z. Valy Vardeny; Lewis J. Rothberg, Editor(s)

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