DNAモデル塩基対の励起状態二重プロトン移動の協奏的機構と段階的機構の長い論争の始まりから終わりまで

• 関谷 博

  九州大学大学院理学研究院

• 迫田 憲治

  九州大学大学院理学研究院

書誌事項

タイトル別名

• Prologue and Epilogue of Concerted and Stepwise Controversy of Excited-state Double-proton Transfer in a Model DNA Base Pair

抄録

Excited-state double-proton transfer (ESDPT) in the coplanar 7-azaindole dimer (7AI₂) has been studied as a model base pair. Concerted and stepwise mechanisms were proposed for ESDPT in 7AI₂. In the concerted mechanism, two protons transfer concertedly on the excited-state potential energy surfaces where a local minimum does not exist. On the other hand, an intermediate state exists in the stepwise mechanism. Therefore, after one single-proton transfer, the second single-proton transfers via the intermediate state. Numerous spectroscopic and theoretical studies were conducted to determine the mechanism of ESDPT of 7AI₂. This review focuses on the ESDPT mechanisms in the gas phase. A prologue and epilogue of the concerted and stepwise mechanism controversy are presented. Spectroscopic experiments in the condensed phase and theoretical calculations related to the potential energy surfaces are important for deriving a final conclusion. In addition, some significant results are comparatively discussed.

収録刊行物

• Molecular Science

  Molecular Science 8 (1), A0071-, 2014

  分子科学会

キーワード

• excited-state double-proton transfer
• concerted and stepwise mechanisms
• 7-azaindole dimer
• model DNA base pair
• potential energy surfaces

詳細情報

• CRID: 1390001205282047360
• NII論文ID: 130004688039
• DOI: 10.3175/molsci.8.a0071
• ISSN: 18818404
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可