Electron Spin Echo Studies of Nonradiative Molecular Triplet States

  • E. J. J. Groenen
Conference paper


Excited molecular triplet states that are short-lived and nonradiative cannot be studied by cw electron paramagnetic resonance or by any method based on optical detection of the magnetization. It will be shown that electron-spin-echo (ESE) detection in combination with pulsed laser excitation has become a very useful tool to investigate such paramagnetic states. Results will be reported for the hitherto inaccessible lowest triplet state of polyenals and of pyridine.




  1. [1]
    M. Ros and E.J.J. Groenen, Chem. Phys. Letters 154 (1989) 29.ADSCrossRefGoogle Scholar
  2. [2]
    W.J. Buma, E.J.J. Groenen, J. Schmidt and R. de Beer, J. Chem. Phys. 91 (1989) 6549.ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • E. J. J. Groenen
    • 1
  1. 1.Huygens LaboratoryUniversity of LeidenLeidenThe Netherlands

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