Sequence distribution and intramolecular excimer formation in styrene-acrylonitrile copolymers

Hill D.J.T., Lewis D.A., O'Donnell J.H., O'Sullivan P.W. and Pomery P.J. (1982) Sequence distribution and intramolecular excimer formation in styrene-acrylonitrile copolymers. European Polymer Journal, 18 1: 75-80. doi:10.1016/0014-3057(82)90135-5


Author Hill D.J.T.
Lewis D.A.
O'Donnell J.H.
O'Sullivan P.W.
Pomery P.J.
Title Sequence distribution and intramolecular excimer formation in styrene-acrylonitrile copolymers
Journal name European Polymer Journal   Check publisher's open access policy
ISSN 0014-3057
Publication date 1982-01-01
Sub-type Article (original research)
DOI 10.1016/0014-3057(82)90135-5
Volume 18
Issue 1
Start page 75
End page 80
Total pages 6
Subject 1605 Policy and Administration
2507 Polymers and Plastics
Abstract Styrene-acrylonitrile copolymers, like many other copolymers containing styrene, exhibit both normal and excimer fluorescence. We have shown that the ratio of the excimer to monomer fluorescence intensities in random styrene-acrylonitrile copolymers is linearly dependent upon the concentration of styrene-styrene bonds in the copolymer. This observation is consistent with a photophysical model which allows the energy absorbed by styrene units to migrate freely along the copolymer chain. Some of the energy is emitted in the form of normal fluorescence; some of the energy, trapped by neighbouring styrene-styrene pairs suitably oriented to allow excimer formation, is emitted as excimer fluorescence. The fluorescence characteristics of acrylonitrile-styrene copolymers are contrasted with those of methyl methacrylate-styrene copolymers, in which the methylmethacrylate sequences are believed to present partial barriers to energy migration along the copolymer chains.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 16 Aug 2016, 13:51:29 EST by System User