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- W1984480859 abstract "Steady state and transient emission studies reveal that an ultrafast excited state intramolecular proton transfer (ESIPT) reaction takes place in the first excited singlet state of 4-methyl-2,6-diformylphenol (MFOH). The large Stokes shifted emission orignates from the proton transferred form of the intramolecularly hydrogen-bonded closed conformer of MFOH in the S0 state. From the solvent dependence of non-radiative decay rate constant kfnr, an enol tautomer is suggested for the fluorescing species. The change in luminescence at 77 K from yellow fluorescence to blue phosphorescence in n-hexane and chloroform is attributed due to the formation of open contormer. The T1 state of MFOH in n-hexane is purely 3nπ∗ in character but in chloroform it is 3ππ∗." @default.
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- W1984480859 date "1995-03-01" @default.
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- W1984480859 title "Intramolecular proton transfer in the first excited singlet state of 4-methyl-2,6-diformylphenol: effect of non-polar and weakly polar aprotic solvents" @default.
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- W1984480859 doi "https://doi.org/10.1016/0584-8539(94)00123-s" @default.
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