The Temperature Dependence of Triplet State Reaction Rate and Quantum Yield for an Intramolecular Enone Photocycloaddition

Abstract

Valence photoisomerization (320-380 nm) of endo-tricyclo-deca-4, 8- diene-3-one has been studied as a function of temperature. At 4 - 51 the isomerization quantum yield is independent of temperature. In the same range the lifetime for the triplet state responsible for isomerization decreases. Arrhenius parameters for triplet decay are computed. A mechanism involving formation of a diradical intermediate which partitions to the valence isomers is suggested.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1976
Accession Number
ADA034156

Entities

People

  • Bellampalli R. Ramachandran
  • Guilford Jones Ii

Organizations

  • Boston University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Arrhenius Equation
  • Chemical Synthesis
  • Chemistry
  • Department Of Defense
  • Emission Spectra
  • Energy Storage
  • Equations
  • Free Radicals
  • Governments
  • Ground State
  • Isomerization
  • Ketones
  • Low Temperature
  • Quantum Efficiency
  • Quantum Yields
  • United States
  • United States Government

Fields of Study

  • Chemistry

Readers

  • Chemistry (specifically Chemical Fluorescence)
  • Organic Chemistry

Technology Areas

  • Quantum Computing