A Novel Approach to Chemical Functionalization of Polymer Film Surfaces by Aromatic Compounds via Photoinduced Electron Transfer

Nobuyuki Ichinose, Noboru Kitamura*, Hiroshi Masuhara

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Photoirradiation of a poly(2-hydroxyethyl methacrylate) (PHEMA) film with an acetonitrile solution of arylalkene or arylcyclopropane (S, aryl group; phenanthryl or pyrenyl group) in the presence of dimethyl terephthalate (DMTP) as an electron acceptor gave an aryl-modified polymer surface. Introduction of the aryl group to the film was confirmed by UV-vis absorption, fluorescence, X-ray photoelectron, and secondary ion mass spectroscopy. Mechanistic investigations indicated that a key intermediate of the photoreaction was the cation radical of S produced by one-electron transfer from the excited singlet state of S to DMTP. In addition to the factors controlling the photoreaction, properties of the modified polymer surface and micrometer fluorescent patterning of the film are also reported.

Original languageEnglish
Pages (from-to)2331-2339
Number of pages9
JournalMacromolecules
Volume26
Issue number9
DOIs
StatePublished - 1 Jan 1993

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