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Proceedings Paper

Polymer Blend Characterization By Fluorescence Detection Of Electronic Excitation Transport
Author(s): K A Peterson; M D Payer
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Paper 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.

Paper Details

Date Published: 27 April 1988
PDF: 5 pages
Proc. SPIE 0910, Fluorescence Detection II, (27 April 1988); doi: 10.1117/12.945434
Show Author Affiliations
K A Peterson, Stanford University (United States)
M D Payer, Stanford University (United States)

Published in SPIE Proceedings Vol. 0910:
Fluorescence Detection II
E. Roland Menzel, Editor(s)

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