Changes in the electric dipole moments and molecular polarizabilities of enol and keto forms of 2-(2′-hydroxyphenyl)benzimidazole along the proton transfer reaction path in a PMMA film

Kazuki Furukawa, Norifumi Yamamoto, Takakazu Nakabayashi, Nobuhiro Ohta, Kiichi Amimoto, Hiroshi Sekiya

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Electroabsorption and electrophotoluminescence spectra were investigated for 2-(2′-hydroxyphenyl)benzimidazole in PMMA, and the results were compared with quantum chemical calculations. The electroabsorption spectrum of the enol form was ascribed to a change in the molecular polarizability following photoexcitation. On the other hand, the electrophotoluminescence spectrum of the keto form was interpreted as a difference in the electric dipole moment between the excited and ground states. The molecular polarizability of the keto form in the S 1 state, estimated to be smaller than that in the S 0 state, suggests that the geometry of HPBI is substantially twisted in the S 1 state.

Original languageEnglish
Pages (from-to)45-49
Number of pages5
JournalChemical Physics Letters
Volume539-540
DOIs
Publication statusPublished - 2012 Jun 29
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Changes in the electric dipole moments and molecular polarizabilities of enol and keto forms of 2-(2′-hydroxyphenyl)benzimidazole along the proton transfer reaction path in a PMMA film'. Together they form a unique fingerprint.

  • Cite this