Dynamics of charge-transfer state formation in supercritical fluid solvent

O. Kajimoto, K. Sekiguchi, T. Nayuki, T. Kobayashi

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The rate of the intramolecular charge-transfer state formation has been determined for 4-(N, N-dimethylamino)-benzonitrile (DMABN) in supercritical CF3H by means of a time-correlated single-photon counting technique. The rate constant increases rapidly with increasing CF3H density, indicating the importance of the polar environment offered by the CF3H molecules which are clustering around a DMABN molecule. With increasing clustering number, the activation barrier is lowered and hence the rate increases exponentially. The observation is semiquantitatively interpreted on the basis of a molecular dynamics simulation of clustering in supercritical solutions.

Original languageEnglish
Pages (from-to)600-605
Number of pages6
JournalBerichte der Bunsengesellschaft/Physical Chemistry Chemical Physics
Volume101
Issue number3
DOIs
Publication statusPublished - 1997 Jan 1
Externally publishedYes

Keywords

  • Clusters
  • Elementary reactions
  • Supercritical fluid

ASJC Scopus subject areas

  • Chemical Engineering(all)

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