Photodesorption of $O_2^-$ on Suspended Zine Oxide

현탁된 산화 아연에서의 $O_2^-$의 광탈착

  • Dong-Chul Chon (Department of Chemistry, Chonnam National University) ;
  • Chong-Soo Han (Department of Chemistry, Chonnam National University) ;
  • Gae-Soo Lee (Department of Chemistry, Chonnam National University) ;
  • Hakze Chon (Department of Chemistry, Korea Advanced Institute of Science and Technology)
  • 전동철 (전남대학교 자연과학대학 화학과) ;
  • 한종수 (전남대학교 자연과학대학 화학과) ;
  • 이계수 (전남대학교 자연과학대학 화학과) ;
  • 전학제 (한국과학기술원 화학과)
  • Published : 1986.02.20


Photodesorption of adsorbed $O_2^-$ on ZnO was investigated in ZnO-$O_2(N_2)$-rubrene-bromobenzene mixture. When the mixture was illuminated with the light having the energy greater than the band gap energy of ZnO (3.2eV), the amount of reacted rubrene increased as the amount of ZnO increased in the experimental condition. For the energy of light less than 3.2eV, however, the reacted amount of rubrene decreased as the amount of ZnO increased. There is a difference in the reacted amount of rubrene between ZnO-$O_2$-rubrene-bromobenzene and ZnO-$N_2$-rubrene-bromobenzene mixtures. From the results, it was suggested that the adsorbed $O_2^-$ on ZnO transform to singlet oxygen in the photodesorption process and the singlet oxygen reacted with rubrene.



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