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Journal of Chemical Sciences

, Volume 105, Issue 6, pp 619–628 | Cite as

Studies of photochemical reaction by CIDNP-detected ESR spectrum

  • Q. Meng
  • Y. Yamakage
  • T. Aizawa
  • K. Maeda
  • T. Azumi
Special Issue on Solar Energy and Applied Photochemistry

Abstract

CIDNP-detected ESR spectroscopy was applied to the study of photochemical reaction. In the CIDNP-detected ESR spectroscopy, the spectrum due to intermediate radical pairs and the spectrum due to free (escaped) radicals can be separately observed. The spectrum due to radical pairs is called stimulated nuclear polarization (SNP), and the spectrum due to free radicals is called dynamic nuclear polarization (DNP). The method was applied to the study of photochemical reaction of 2,6-dichlorobenzoquinone and the isomerization of quadricyclane assisted by photoinduced electron transfer, and the chemical species of the intermediate radical pair and of the radical were clarified.

Keywords

CIDNP-detected ESR dynamic nuclear polarization dichlorobenzoquinone quadricyclane 

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Copyright information

© Indian Academy of Sciences 1993

Authors and Affiliations

  • Q. Meng
    • 1
  • Y. Yamakage
    • 1
  • T. Aizawa
    • 1
  • K. Maeda
    • 1
  • T. Azumi
    • 1
  1. 1.Department of Chemistry, Faculty of ScienceTohoku UniversitySendaiJapan

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