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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Proton-transfer spectroscopy of 3-hydroxyflavone in an isolated-site crystal matrix.

The isolated-site low-temperature crystal matrix (dilute solutions in heptane and in octane) ( Shpol ' skii matrix) is shown to be operative for the spectroscopic study of 3- hydroxyflavone luminescence. The observed luminescence is demonstrated to be unique proton-transfer fluorescence from the excited tautomer. A separate study at higher concentrations of aggregated molecule luminescence and excitation spectra distinguishes these for 3- hydroxyflavone from isolated-molecule spectra. The application of the Shpol ' skii matrix low-temperature spectroscopy technique is suggested for other large heteroaromatic molecules, such as biomolecules containing polar groups that impart low solubility in nonaqueous solvents.[1]


  1. Proton-transfer spectroscopy of 3-hydroxyflavone in an isolated-site crystal matrix. McMorrow, D., Kasha, M. Proc. Natl. Acad. Sci. U.S.A. (1984) [Pubmed]
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