Mechanism of the pyrene-sensitized photolysis of N-(1-naphthoyl)-O-(p-toluoyl)-N-phenylhydroxylamine.

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概要

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• The title hydroxylamine (NT) undergoes pyrene-sensitized photodecomposition to give rearrangement and fragmentation products. An analysis of linear Stern–Volmer plots, both for the sensitized photolysis of NT and for the fluorescence quenching of pyrene by NT, indicates the involvement of singlet pyrene in this photolysis. The observation of negligible effects of 1,3-cyclohexadiene and <I>trans</I>-stilbene as a triplet quencher on the reaction provides further supporting evidence for a singlet-pathway mechanism. A comparison of the relative state energies of NT and the sensitizer suggests the existence of a reactive singlet-exciplex intermediate formed between the singlet-state sensitizer and the ground-state NT. The results of solvent and micellar effects on the sensitized photolysis establish that electron transfer in the exciplex predominates in a polar solvent, and that in a nonpolar solvent energy transfer in this exciplex plays a major role in the reaction.

• 公益社団法人 日本化学会の論文

著者

• Okubo Jun

  Department Of Chemistry College Of Science And Engineering Aoyama Gakuin University

• Sakurai Tadamitsu

  Department Of Applied Chemistry Faculty Of Engineering Kanagawa University

• Inoue Hiroyasu

  Department Of Applied Chemistry Faculty Of Technology Kanagawa University

• Ishikawa Takayoshi

  Department Of Pediatric Dentistry Hiroshima University School Of Dentistry

• HOSHI Toshihiko

  Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University

• Inomata Kensuke

  Department of Applied Chemistry, Faculty of Technology, Kanagawa University

• Ishikawa Takayoshi

  Department of Applied Chemistry, Faculty of Technology, Kanagawa University

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