27 April 1988 Polymer Blend Characterization By Fluorescence Detection Of Electronic Excitation Transport
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Proceedings Volume 0910, Fluorescence Detection II; (1988) https://doi.org/10.1117/12.945434
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States
Abstract
The rate of incoherent electronic excitation transport among chromophores randomly tagged on flexible polymer chains has been related theoretically to their ensemble average rms radius of gyration (<¹R 2>1/2). The rate of excitation transport is monitored by time-resolved fluorescence depolarization spectroscopy. Experiments which measure the rate of excitation transport among naphthyl chromophores in low concentration on iso-lated chains of poly-(2-vinylnaphthalene-co-methyl methacrylate) in poly(methyl methacry-late) (PMMA) host provide a quantitative determination of the copolymer <R 2>1/2. Measure-ments were made on copolymers of two different molecular weights and three different percentages of naphthyl containing monomers. In all cases, the measured <R 2>1/2 agree with determinations by other methods for PMMA in 6-solvents and are independent of 2-vinylnaphthalene concentration. The results demonstrate the utility of excitation trans-port techniques for quantitative investigation of polymer chain conformation in the solid state.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
K A Peterson, M D Payer, "Polymer Blend Characterization By Fluorescence Detection Of Electronic Excitation Transport", Proc. SPIE 0910, Fluorescence Detection II, (27 April 1988); doi: 10.1117/12.945434; https://doi.org/10.1117/12.945434
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