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Abstract
Abstract Picosecond time-resolved fluorescence spectroscopy and computer analysis procedures have been applied to study electronic energy transport in synthetic macromolecules. Second-harmonic generation and sum frequency mixing of actively mode-locked lasers provides tunable ultraviolet radiation for excitation of a wide range of vinyl aromatic polymers. Time-correlated single photon counting detection techniques enable the recording of fluorescence decay data with a time resolution of less than 50 ps and when combined with curve-resolution techniques based on principal factor analysis can provide insight into the heterogeneous fluorescence from polymers. The application of these techniques is described to examine energy transfer and excimer formation in solutions of poly(acenaphthalene), poly(2-naphthylmethacrylate) and films of p-methyl styrene/acrylonitrile co-polymers.
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