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- W2764228838 abstract "Coelenterazine is a common substrate used by marine species in enzyme-catalyzed bioluminescent reactions, in which thermal energy is converted into light-emission. Besides bioluminescence, Coelenterazine is also known to emit chemiluminescence in aprotic solvents. We report here the study of Coelenterazine chemiluminescence in aqueous solution. Water inhibits light-emission even in mixtures with water content as low as 20%. Moreover, we provide convincing spectroscopic evidence that the presence of water affects the ground state (S0) chemical reaction, and not the excited state processes (as chemiexcitation and the fluorescent quantum yield). However, the energetics of the S0 chemical reaction is not affect by addition of water, which points to the inhibition being caused by the reduced lifetime of superoxide anion in water, which is an intermediate in the luminescent reactions of Coelenterazine. This finding indicates that one of the catalytic roles of bioluminescent enzymes is to extend the lifetime of this radical." @default.
- W2764228838 created "2017-10-20" @default.
- W2764228838 creator A5026513060 @default.
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- W2764228838 date "2018-02-01" @default.
- W2764228838 modified "2023-10-16" @default.
- W2764228838 title "Combined experimental and theoretical study of Coelenterazine chemiluminescence in aqueous solution" @default.
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- W2764228838 doi "https://doi.org/10.1016/j.jlumin.2017.10.025" @default.
- W2764228838 hasPublicationYear "2018" @default.
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