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ESR Studies on Primary Processes in Radiation-Induced Reactions. VI. Isoprene and 1,3-Pentadiene in Alkyl Halide Matrices

ESR Studies on Primary Processes in Radiation-Induced Reactions. VI. Isoprene and 1,3-Pentadiene... The cation radical of isoprene was first detected by means of ESR. It was produced by γ-irradiation in carbon tetrachloride, and has proton coupling constants of a 1=13.0 G (2H), a 2=4.9 G (3H), a 3=3.2 G (1H), and a 4=9.2 G (2H). In n-butyl chloride glass at 77°K a linear allyl-type radical was formed from isoprene. The initiation of polymerization by the isoprene cation radical was suggested in n-butyl chloride glass at 77°K during γ-irradiation. A cyclohexadienyl-type radical was produced from trans-1,3-pentadiene by γ-irradiation in carbon tetrachloride, whereas, a linear allyl-type radical was produced from cis-1,3-pentadiene. In a n-butyl chloride glass, a linear allyl-type radical was produced from both 1,3-pentadiene by γ-irradiation at 77°K. The cation radical were suggested to initiate radiation-induced polymerization in n-butyl chloride glass at 77°K. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Polymer Journal Springer Journals

ESR Studies on Primary Processes in Radiation-Induced Reactions. VI. Isoprene and 1,3-Pentadiene in Alkyl Halide Matrices

Polymer Journal , Volume 6 (1) – Mar 25, 2006

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References (8)

Publisher
Springer Journals
Copyright
Copyright © 1974 by The Society of Polymer Science, Japan
Subject
Chemistry; Chemistry/Food Science, general; Polymer Sciences; Biomaterials; Surfaces and Interfaces, Thin Films; Bioorganic Chemistry
ISSN
0032-3896
eISSN
1349-0540
DOI
10.1295/polymj.6.7
Publisher site
See Article on Publisher Site

Abstract

The cation radical of isoprene was first detected by means of ESR. It was produced by γ-irradiation in carbon tetrachloride, and has proton coupling constants of a 1=13.0 G (2H), a 2=4.9 G (3H), a 3=3.2 G (1H), and a 4=9.2 G (2H). In n-butyl chloride glass at 77°K a linear allyl-type radical was formed from isoprene. The initiation of polymerization by the isoprene cation radical was suggested in n-butyl chloride glass at 77°K during γ-irradiation. A cyclohexadienyl-type radical was produced from trans-1,3-pentadiene by γ-irradiation in carbon tetrachloride, whereas, a linear allyl-type radical was produced from cis-1,3-pentadiene. In a n-butyl chloride glass, a linear allyl-type radical was produced from both 1,3-pentadiene by γ-irradiation at 77°K. The cation radical were suggested to initiate radiation-induced polymerization in n-butyl chloride glass at 77°K.

Journal

Polymer JournalSpringer Journals

Published: Mar 25, 2006

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