Fluorescence resonance energy transfer on fractals - American

T. Gregory Dewey. Department of Chemistry, University of Denver, Denver, Colorado 80208. Received October 30,1991. In 1949 Theodor Foerster measured ...
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Acc. Chem. Res. 1992,25,195-200

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Fluorescence Resonance Energy Transfer on Fractals T. GREGORY DEWEY Department of Chemistry, University of Denver, Denver, Colorado 80208 Received October 30, 1991

In 1949 Theodor Foerster measured the quenching of trypaflavine fluorescence by rhodamine B in a methanol solution.’ Although by today’s standards this was not a particularly remarkable experiment, the theory presented in this work served as a guidepost for the extensive theoretical and experimental literature to follow. The fluorescence quenching observed in these types of experiments results from long-range, nonradiative transfer of electronic excitation energy. This transfer occurs when transition dipoles are close enough (