Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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An Immobilized Fenton Catalyst$^1$

  • Song, Pill-Soon (Department of Chemistry, Seoul National University, Department of Chemistry, Texas Tech University) ;
  • Choi, Jung-Do (Department of Chemistry, Seoul National University, Department of Biochemistry, Emory University)
  • Published : 1980.09.30
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Abstract

Lumichrome (7,8-dimethylalloxazine) exhibits two fluorescence emission maxima at 440 and 540 nm in pyridine-dioxane. These emission band maxima are attributable to radiative decays from the excited states of lumichrome and its flavin tautomer, 7,8-dimethylisoalloxazine, respectively. The growth of the latter can be followed upon excitation of the former with a 2-nanosecond light pulse generated from the nitrogen plasma discharge lamp. The excited state tautomerism results from proton transfer from N-1 to N-10 position during the lifetime of the lumichrome singlet excited state. The rate depends on the concentration of general base, pyridine, and it is an order of magnitude slower than diffusion-controlled processes.

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References

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