Vibrational relaxation by reversible intersystem crossing
1979; Elsevier BV; Volume: 44; Issue: 1 Linguagem: Inglês
10.1016/0301-0104(79)80061-0
ISSN1873-4421
Autores Tópico(s)Hemoglobin structure and function
ResumoThe time- and energy-resolved fluorescence spectra of CO obtained under selective excitation of the A 1Π (υ′ = 1) level have been studied. The apparent vibrational relaxation in the singlet manifold is shown to be mainly due to the three-step process: the singlet → triplet crossing from υ′ = 1 level, vibrational relaxation in the triplet manifold and reverse crossing to the A 1Π (υ′ = 0) level. The decay form may be fitted by assuming the relaxation rate constants in triplet (and singlet) manifolds of the order of 105 s−1 Torr−1 i.e. smaller by one order of magnitude than previously proposed.
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