Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.343609
Title: Study of charge-transfer interactions in polyvinylpyridine-halobenzoquinone complexes by x-ray photoelectron spectroscopy
Authors: Tan, K.L. 
Tan, B.T.G. 
Kang, E.T. 
Neoh, K.G. 
Issue Date: 1989
Citation: Tan, K.L., Tan, B.T.G., Kang, E.T., Neoh, K.G. (1989). Study of charge-transfer interactions in polyvinylpyridine-halobenzoquinone complexes by x-ray photoelectron spectroscopy. Journal of Applied Physics 66 (12) : 5868-5871. ScholarBank@NUS Repository. https://doi.org/10.1063/1.343609
Abstract: The charge-transfer (CT) interactions in electroactive polymeric complexes formed by nonconjugated polymers: poly-2-vinylpyridine, poly-4-vinylpyridine, and various halobenzoquinone electron acceptors such as: o-chloranil, p-chloranil, o-bromanil, and p-fluoranil have been investigated by means of x-ray photoelectron spectroscopy (XPS). In spite of the relatively high degree of CT interactions, the conductivity of the complexes remains low and in the range of 10-11-10-6 S cm-1. XPS core-level spectra for halogens, nitrogen, and oxygen allow the steric hindrance to CT interactions in the various complexes to be investigated and compared. In all the complexes, the presence of a halogen anion, a positively charged pyridinium nitrogen, and an oxygen anion is observed. This is indicative that CT interactions may have resulted in adducts arising from the formation of linkages between the polymers and the acceptors.
Source Title: Journal of Applied Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/91721
ISSN: 00218979
DOI: 10.1063/1.343609
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