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Statements

Subject Item
n2:RIV%2F00216208%3A11310%2F11%3A10100541%21RIV12-GA0-11310___
rdf:type
n10:Vysledek skos:Concept
dcterms: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 distribution of isomerized and high-cis macromolecules is assumed to result from acceleration of degradation of polymer chains by simultaneous cis-to-trans isomerization. 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.
dcterms:title
SEC/DAD and 1H NMR Study of Molecular Weight and Configurational Stability of Poly(2,4-difluorophenylacetylene) and Polyphenylacetylene Prepared with Rh Catalyst SEC/DAD and 1H NMR Study of Molecular Weight and Configurational Stability of Poly(2,4-difluorophenylacetylene) and Polyphenylacetylene Prepared with Rh Catalyst
skos:prefLabel
SEC/DAD and 1H NMR Study of Molecular Weight and Configurational Stability of Poly(2,4-difluorophenylacetylene) and Polyphenylacetylene Prepared with Rh Catalyst SEC/DAD and 1H NMR Study of Molecular Weight and Configurational Stability of Poly(2,4-difluorophenylacetylene) and Polyphenylacetylene Prepared with Rh Catalyst
skos:notation
RIV/00216208:11310/11:10100541!RIV12-GA0-11310___
n10:predkladatel
n11:orjk%3A11310
n4:aktivita
n19:Z n19:S n19:P
n4:aktivity
P(GA203/09/0803), P(GAP108/11/1661), P(GD203/08/H032), S, Z(MSM0021620857)
n4:cisloPeriodika
18
n4:dodaniDat
n8:2012
n4:domaciTvurceVysledku
n9:5069173 n9:5303583 n9:9635939 n9:4102274
n4:druhVysledku
n21:J
n4:duvernostUdaju
n18:S
n4:entitaPredkladatele
n6:predkladatel
n4:idSjednocenehoVysledku
228503
n4:idVysledku
RIV/00216208:11310/11:10100541
n4:jazykVysledku
n7:eng
n4:klicovaSlova
polyacetylenes; isomers/isomerization; gel permeation chromatography (GPC); degradation; conjugated polymers
n4:klicoveSlovo
n5:isomers%2Fisomerization n5:gel%20permeation%20chromatography%20%28GPC%29 n5:degradation n5:polyacetylenes n5:conjugated%20polymers
n4:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n4:kontrolniKodProRIV
[119EB311A604]
n4:nazevZdroje
Macromolecular Chemistry and Physics
n4:obor
n20:CD
n4:pocetDomacichTvurcuVysledku
4
n4:pocetTvurcuVysledku
4
n4:projekt
n14:GD203%2F08%2FH032 n14:GAP108%2F11%2F1661 n14:GA203%2F09%2F0803
n4:rokUplatneniVysledku
n8:2011
n4:svazekPeriodika
212
n4:tvurceVysledku
Trhlíková, Olga Sedláček, Jan Vohlídal, Jiří Zedník, Jiří
n4:wos
000295253000005
n4:zamer
n16:MSM0021620857
s:issn
1022-1352
s:numberOfPages
12
n15:doi
10.1002/macp.201100228
n17:organizacniJednotka
11310