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Proceedings Paper

ESR, Raman scattering, and photoluminescence studies polyacenic conducting polymer
Author(s): Yichun Liu; Xuying Qi; X. Xing
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Paper Abstract

Basing on the results of the ESR, RS and PL, we propose the following structural model for polyacenic conducting polymer prepared by pyrolysis of model phenolformaldhyde (PF). Sample is consist of condense aromatic rings in short range order in which sp2 and sp3 two phase carbon exist. Small sp2 cluster will directly couple forming extented larger sp2 cluster by carbonating and nucleating with the rise of Tp. The stability of sp3 bond is bad so that it would easily change to the stable sp2 bond in condense aromatic rings. The weight of the sp3 bond carbon get small with Tp rising. On the other hand, larger size sp2 cluster form resulting in electrical conductivity increasing and thermal active energies decreasing. We suggest that the size of the condense aromatic rings is proporational to Tp. Small (large) cluster has large (small) optical gap. PL spectra shift to lower energies with the rise of Tp. The PL intensity of the samples is correlated with the content of hydrogan, the number of the dangling bonds and the weight of the sp3 bond carbon.

Paper Details

Date Published: 14 May 1992
PDF: 5 pages
Proc. SPIE 1636, Applied Spectroscopy in Materials Science II, (14 May 1992); doi: 10.1117/12.59301
Show Author Affiliations
Yichun Liu, Northeast Normal Univ. (China)
Xuying Qi, Northeast Normal Univ. (China)
X. Xing, Northeast Normal Univ. (China)


Published in SPIE Proceedings Vol. 1636:
Applied Spectroscopy in Materials Science II
William G. Golden, Editor(s)

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