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- W2119783906 abstract "In the present article, the electronic structure of 4-nitroquinoline-1-oxide (4NQO) has been theoretically investigated at the level of HFSCF/6-31G**. Conformation of monomeric 4NQO has been found to be the most stable when the nitro group twists from the quinoline plane by about 24°. The absorption spectra of the twisted 4NQO have been calculated by using complete active space self-consistent field method. The hydrogen bonded complexes of 4NQO and tryptophan have been intensively studied. The absorption spectra of the most stable complex have been calculated to investigate the photoinduced electron transfer between 4NQO and tryptophan. The first and second excited singlet states are found to be charge-separated. Population analysis shows that the low-lying triplet states are charge-separated as well, except for the lowest one that presents the characters of a locally excited state. A solvent effect on transition energies has been considered based on the Ooshika–Lippert–Martaga equation. Theoretical study shows that the optical excitation can lead to charge separation in the 4NQO–tryptophan complex. © 2004 Wiley Periodicals, Inc. Int J Quantum Chem, 2004" @default.
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- W2119783906 date "2004-01-01" @default.
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- W2119783906 title "Ab initio study of hydrogen bonding interaction and photoinduced electron transfer between 4-nitroquinoline-1-oxide and tryptophan" @default.
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- W2119783906 doi "https://doi.org/10.1002/qua.20005" @default.
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