Journal
MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume 212, Issue 18, Pages 1987-1998Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201100228
Keywords
conjugated polymers; degradation; gel permeation chromatography (GPC); isomers/isomerization; polyacetylenes
Categories
Funding
- Ministry of Education of the Czech Republic [MSM0021620857]
- Czech Science Foundation [203/09/0803, P108/11/1661, 203/08/H032]
- Science Foundation of Charles University [315/2008 B-CH]
Ask authors/readers for more resources
Newly prepared high-cis poly(2,4-difluorophenylacetylene) is found to undergo simultaneous cis-to-trans isomerization and degradation during aging in THF-d(8) solution exposed to the atmosphere. Partly aged polymers contain two microstructurally differing fractions: deeply isomerized macromolecules of lower MW and microstructurally unperturbed high-cis macromolecules of higher MW. SEC/DAD provides an unambiguous distinction and UV-Vis characterization of these fractions. The non-uniform MW distribution of isomerized and high-cis macromolecules is assumed to result from acceleration of degradation of polymer chains by simultaneous cis-to-trans isomerization.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available