Hydrogen‐Bonding Interactions between Harmane and Pyridine in the Ground and Lowest Excited Singlet States
作者： Manuel Balón , María A. Muñoz , Pilar Guardado , Carmen Carmona
DOI: 10.1111/J.1751-1097.1996.TB03101.X
关键词:
摘要: — A spectroscopic (UV-visible, Fourier transform IR, steady-state and time-resolved fluorescence) study of hydrogen-bonding interactions between harmane (1-meth-yl-9H-pyrido/3,4-b/indole) pyridine in the ground lowest excited singlet state is reported. In low polar weakly or nonhydrogen-bonding solvents, such as cy-clohexane, chloroform, carbon tetrachloride, toluene benzene, analysis data indicates that form 1:1 stoichiometric hydrogen-bonded complexes both states. The formation constants are greater than state. Hydrogen-bonding interaction essential for quenching fluorescence by pyridine. stabilities diminish polarity ability solvent increase.
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