Reversible photoreaction of C60-containing poly(vinyl alcohol)

Yun Chen, Chang Hsin Tsai

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Poly(vinyl alcohol) (PVA) was reacted with strong base NaH to convert its pendant hydroxy to oxy anions, followed with nucleophilic addition to buckminster-fullerene-C60. The resulted PVA(C60-Na+)n products were then converted to PVA(C60H)n by stirring with a strong acid cation exchanger of the H+ form. The reduced viscosities of PVA(C60H)n decreases with amount of C60, and are between 0.38 and 0.66 dL/g compared to 1.97 dL/g of the original PVA. Repeated photocrosslinking under 300 nm light and photocleavage under 254 nm light of these C60-containing PVAs were investigated in DMSO by tracing their UV absorption variations at 325 nm (maximum absorption of C60H). It is confirmed that both PVA(C60H)n exhibit excellent reversibility at least under the observed three cycles.

Original languageEnglish
Pages (from-to)605-611
Number of pages7
JournalJournal of Applied Polymer Science
Volume70
Issue number3
DOIs
Publication statusPublished - 1998 Oct 17

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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