Conformational analysis of intramolecular excimer formation in dinaphthylalkanes.

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概要

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• Intramolecular excimer formation processes were explained by the conformational energy calculated by an empirical method. Observed rate constants of excimer formation processes are closely correlated to the fraction of <I>tg</I> conformation. This indicates that intramolecular excimers are mainly formed by the internal rotation, <I>trans</I>→<I>gauche</I>, with reference to the naphthalene unit. The fraction of the <I>tg</I> conformation, which is an adjacent conformation to the excimer conformation on the conformational energy map, serves as an effective concentration of the intramolecular reaction. The small formation rate for <I>rac</I>-2,4-di(2-naphthyl)pentane is due to the unfavorable rotational mode (<I>g</I><SUP>+</SUP>\rightleftarrows<I>g</I><SUP>−</SUP>) required to take the excimer conformation.

• 公益社団法人 日本化学会の論文

著者

• Ito Shinzaburo

  Department Of Polymer Chemistry Graduate School Of Engineering Kyoto University

• Yamamoto Masahide

  Department Of Hematology Tokyo Medical And Dental University

• Nishijima Yasunori

  Department of Chemistry Polytechnic Institute of Brooklyn

• Yamamoto Masahide

  Department of Polymer Chemistry, Kyoto University

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