Dynamics of the tyrosine triplet state from magnetic resonance-saturated phosphorescence decay measurements
作者： Tiao-te Co , Robert J. Hoover , August H. Maki
DOI: 10.1016/0009-2614(74)80432-X
关键词: Phosphorescence 、 Tyrosine 、 Intersystem crossing 、 Atomic physics 、 Relaxation rate 、 Saturation (chemistry) 、 Chemistry 、 Triplet state 、 Ionization 、 Excitation
摘要: Abstract Analysis of the phosphorescence decays measured during magnetic resonance saturation sublevel populations has been carried out on tyrosine and tyrosinate triplet states at 1.17°K in zero field. The individual decay constants spin-lattice relaxation rate are derived. Relative intersystem crossing rates to sublevels obtained from flash excitation microwave-induced delayed measurements. Intersystem is not spin-selective tyrosine, but becomes so upon ionization near pH = 12. mechanism discussed terms a model proposed by Bersohn.
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