Summary
Polystyrene (PSt) exhibits a new UV absorption band at around 290nm in comparison with ethylbenzene, which is attributed to associative interaction between pendant phenyl groups. Similar absorption bands are also observed for polymers of styrene derivatives. The UV spectra suggest charge-transfer complex formation between the polymeric and monomeric donors with electron-acceptor tetracyanoethylene (TCNE) and the equilibrium constants were estimated to be in the sequence of ethylbenzene > PSt > copolymer of St with methylmethacrylate.
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Li, T., Zhou, C. & Jiang, M. UV absorption spectra of polystyrene. Polymer Bulletin 25, 211–216 (1991). https://doi.org/10.1007/BF00310794
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DOI: https://doi.org/10.1007/BF00310794