Local density augmentation around acetophenone N,N,N′,N′- tetramethylbenzidine exciplex in supercritical water

Takafumi Aizawa, Mitsuhiro Kanakubo, Yutaka Ikushima, Richard L. Smith, Tohru Saitoh, Nobuhiro Sugimoto

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Local density augmentation around exciplex between acetophenone and N,N,N,N-tetramethylbenzidine (TMB) in supercritical water was measured by peak shift of transient absorption spectrum at 380°C and at pressures from 6 to 37 MPa. Large local density augmentation was observed at lower densities. The excess density, defined by the difference between local density and bulk density, exhibited a maximum at approximately 0.15 gcm-3. Our results show that the degree of local density augmentation that exists in supercritical water is comparable to that observed in supercritical carbon dioxide in some system.

Original languageEnglish
Pages (from-to)31-35
Number of pages5
JournalChemical Physics Letters
Volume393
Issue number1-3
DOIs
Publication statusPublished - 2004 Jul 21

ASJC Scopus subject areas

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

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