SEC/DAD and 1H NMR Study of Molecular Weight and Configurational Stability of Poly(2,4-difluorophenylacetylene) and Polyphenylacetylene Prepared with Rh Catalyst

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F11%3A10100541" target="_blank" >RIV/00216208:11310/11:10100541 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/macp.201100228" target="_blank" >http://dx.doi.org/10.1002/macp.201100228</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/macp.201100228" target="_blank" >10.1002/macp.201100228</a>

Result language
angličtina
Original language name
SEC/DAD and 1H NMR Study of Molecular Weight and Configurational Stability of Poly(2,4-difluorophenylacetylene) and Polyphenylacetylene Prepared with Rh Catalyst
Original language description
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 distributionof isomerized and high-cis macromolecules is assumed to result from acceleration of degradation of polymer chains by simultaneous cis-to-trans isomerization.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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