Singlet State Photochemistry of Dibenzyl Ketone and its o-Tolyl Derivatives

Abstract

The singlet state contribution of alpha cleavage in the photochemistry of dibenzyl ketone (DBK) and o-tolylmethylbenzyl ketone (TBK) was investigated. The fitting of a master Stern-Volmer equation for the simultaneous quenching of the S1 and T1 states of DBK and TBK leads to the conclusion that in both ketones alpha cleavage occurs in the singlet state, but to a lesser (20- 30%) extent than in the triplet. Comparison of the relative fluorescence and alpha cleavage quantum yields of DBK and TBK is also consistent with the presence of singlet state alpha cleavage in both ketones.... Photochemistry, singlet state

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1993
Accession Number
ADA267083

Entities

People

  • Eugene Step
  • Nicholas J. Turro
  • Taehee Noh

Organizations

  • Columbia University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Chemical Synthesis
  • Chemistry
  • Cyclic Hydrocarbons
  • Equations
  • Ground State
  • Internal Conversion
  • Magnetic Fields
  • Measurement
  • Organic Chemistry
  • Photochemistry
  • Quantum Efficiency
  • Quantum Properties
  • Quantum Yields
  • Relaxation Time
  • Spectra
  • Spectroscopy

Fields of Study

  • Chemistry

Readers

  • Molecular Photonics/Laser Physics
  • Organic Chemistry

Technology Areas

  • Quantum Computing