Photodegradation and Electron-Beam-Induced Degradation of Poly[(pentamethyldisilyl)styrene sulfone]s

Akira Watanabe, Taro Sakakibara, Seiki Ito, Hiroshi Ono, Youichi Yoshida, Minoru Matsuda

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Photodegradation and electron-beam-induced degradation of poly[(pentamethyldisilyl)styrene sulfone]s were investigated by flash and pulse radiolysis techniques. The transient absorption spectra obtained by the flash photolysis for the solution of nonalternating poly [(pentamethyldisilyl)styrene sulfone]s in THF (tetrahydrofuran) showed the formation of benzyl radical as a transient intermediate. On the other hand, the transient absorption spectra for an alternating poly [(pentamethyldisilyl)styrene sulfone] did not show the absorption of benzyl radical but showed that of p-(pentamethyldisilyl)styrene monomer. The decay curve for an alternating poly [(pentamethyldisilyl) styrene sulfone] exhibited fast depropagation after the flash photolysis. The disilyl bond in the polymer dissociates easily by photolysis whereas the bond was stable under electron-beam irradiation. The transient absorption spectra of a radical anion of the sulfonyl group was observed by pulse radiolysis for the solution of poly[(pentamethyldisilyl)styrene sulfone]s in THF.

Original languageEnglish
Pages (from-to)692-697
Number of pages6
JournalMacromolecules
Volume25
Issue number2
DOIs
Publication statusPublished - 1992 Mar 1

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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