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Fluorescence and absorbance of polystyrene in dilute and semidilute solutions

Torkelson, John M. and Lipsky, Sanford and Tirrell, Matthew and Tirrell, David A. (1983) Fluorescence and absorbance of polystyrene in dilute and semidilute solutions. Macromolecules, 16 (2). pp. 326-330. ISSN 0024-9297. https://resolver.caltech.edu/CaltechAUTHORS:TORm1983

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Abstract

The fluorescence and absorbance of polystyrene in solution have been measured over a wide concentration range for several molecular weights and solvents. The absorbance at wavelengths below 280 nm for these molecular weights and solvents is found to be insensitive to the transition between dilute and semidilute solutions. Self-absorption of the fluorescence results in a much reduced observed monomer emission at high concentration. When this is corrected, the ratio of excimer to monomer fluorescence intensity, I_E/I_M, is essentially constant at low concentrations and at most increases only very slowly and smoothly at higher concentrations. No significant molecular weight or solvent effects on the concentration dependence of I_E/I_M are manifested for these molecular weights and solvents over the concentration range studied. Contrary to previous reports, fluorescence spectroscopy reveals no abrupt transition between dilute and semidilute solutions.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/ma00236a031DOIArticle
http://pubs.acs.org/doi/abs/10.1021/ma00236a031PublisherArticle
ORCID:
AuthorORCID
Tirrell, David A.0000-0003-3175-4596
Additional Information:© 1983 American Chemical Society. Received April 28, 1982. We gratefully acknowledge partial support of this work by each of several programs: The Research Corp., U.S. Department of Energy, the Camille and Henry Dreyfus Foundation, the Alfred P. Sloan Foundation, and the Graduate School of the University of Minnesota.
Funders:
Funding AgencyGrant Number
Research CorporationUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Camille and Henry Dreyfus FoundationUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
University of Minnesota, Graduate SchoolUNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:TORm1983
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:TORm1983
Official Citation:Fluorescence and absorbance of polystyrene in dilute and semidilute solutions John M. Torkelson, Sanford Lipsky, Matthew Tirrell, and David A. Tirrell Macromolecules 1983 16 (2), 326-330
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53651
Collection:CaltechAUTHORS
Deposited By: Anne Hormann
Deposited On:16 Jan 2015 20:02
Last Modified:03 Oct 2019 07:51

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