TEMPERATURE EFFECTS ON THE PHOSPHORESCENCE OF BENZOPHENONE,

Abstract

The paper reports the first observation of the phosphorescence of benzophenone in 'solution' at 298K. By using poly(methyl methacrylate) as a rigid solvent matrix, it was possible to minimize diffusion-limited quenching processes that may be responsible for the short lifetimes previously observed in benzene. The temperature dependence of the phosphorescence intensity and lifetime were also measured which permits an evaluation of temperature effects on the rate constants for both radiative kr and nonradiative knr decay of the triplet state. It was found that at 80K knr = 50/sec and kr = 150/sec, while at 298K knr = 530/sec and kr = 44/sec. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1968
Accession Number
AD0675201

Entities

People

  • Peter F. Jones
  • Seymour Siegel

Organizations

  • The Aerospace Corporation

Tags

DTIC Thesaurus Topics

  • Acyclic Hydrocarbons
  • Alkenes
  • Chemical Compounds
  • Diffusion
  • Hydrocarbons
  • Intensity
  • Ketones
  • Methacrylates
  • Observation
  • Organic Compounds
  • Phosphorescence
  • Quenching
  • Test And Evaluation

Readers

  • Materials Science and Engineering.
  • Polymer Science and Technology
  • Systems Analysis and Design