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Upper electron‐excited states in bioluminescence: experimental indication
Author(s) -
Kudryasheva N. S.,
Nemtseva E. V.,
Meshalkin Yu. P.,
Sizykh A. G.
Publication year - 2001
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.613
Subject(s) - excited state , bioluminescence , fluorescence , chemistry , singlet state , photochemistry , excitation , anthracene , atomic physics , physics , optics , biochemistry , quantum mechanics
The involvement of upper electron‐excited states in bacterial bioluminescence process was studied with excitation energy‐accepting molecules. The fluorescent aromatic compounds, anthracene and 1.4‐bis(5‐phenyloxazol‐2‐yl)benzene, were chosen. Energies of their lowest excited singlet states are higher than the energy of the analogous state of the bioluminescence emitter; their absorption spectra and bioluminescence do not overlap. Hence, the excitation of these molecules by singlet–singlet energy transfer or by light absorption is excluded. Sensitized fluorescence of these compounds in the bioluminescence systems has been recorded, indicating the activity of upper electron‐excited states in the bioluminescent process. Copyright © 2001 John Wiley & Sons, Ltd.