Rotational Diffusion and Trans-cis Isomerization of Substituted Diphenyl Polyenes in the Compressible Region of Supercritical Fluids.

• Kauffman John F.

  Department of Chemistry, University of Missouri

• Wiemers Kathy

  Department of Chemistry, University of Missouri

• Khajehpour Mazdak

  Department of Chemistry, University of Missouri

書誌事項

タイトル別名

• Rotational Diffusion and Trans-cis Isom

抄録

We examine rotational diffusion and trans-cis isomerization of two diphenyl polyenes, diphenylbutadiene (DPB) and hydroxymethyl-stilbene (HMS) in supercritical fluid CO₂ and ethane. The results of density dependent rotational diffusion measurements are interpreted using a model which we have recently developed for rotational diffusion in compressible fluids. Comparison of DPB and HMS fluorescence lifetimes indicate that the rate of the isomerization reaction of DPB is nearly independent of density while HMS exhibits a strong density dependence in CO₂. Analysis of the HMS data using Kramers theory indicates that the density dependence is the result of solvent-solute frictional interactions.

収録刊行物

• 高圧力の科学と技術

  高圧力の科学と技術 7 1225-1229, 1998

  日本高圧力学会

キーワード

• supercritical fluid
• rotational diffusion
• chemical reaction
• time-resolved fluorescence
• viscosity

詳細情報

• CRID: 1390001204382168576
• NII論文ID: 10002693462
• NII書誌ID: AN10452913
• DOI: 10.4131/jshpreview.7.1225
• ISSN: 13481940
• ISSN: 0917639X
• NDL書誌ID: 4494199
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4494199
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可