About: Molecular Weight and Configurational Stability of Poly[(fluorophenyl) acetylene]s Prepared with Metathesis and Insertion Catalysts

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About: Molecular Weight and Configurational Stability of Poly[(fluorophenyl) acetylene]s Prepared with Metathesis and Insertion Catalysts Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Series of high-cis and cis/trans poly[(fluorophenyl)acetylene]s (PFPhA) have been prepared by polymerization of (2-fluorophenyl)acetylene, (3-fluorophenyl)acetylene, and (4-fluorophenyl)acetylene with catalysts: [Rh(1,5-cyclooctadiene) OCH3](2) (high-cis PFPhAs) and tungsten(VI) oxychloride/tetraphenyltin (cis/trans PFPhAs). The molecular weight and configurational stability under various conditions at room temperature were studied for both PFPhAs series by means of size exclusion chromatography, H-1-NMR, and UV-vis techniques. All samples exhibited slow degradation when exposed to the atmosphere in the solid state; the rate of degradation was independent on the F-position on the Ph ring. The rate of degradation increased up to three orders of magnitude in the tetrahydrofuran solution where it was higher for high-cis polymers compared with their cis/trans counterparts. The degradation of high-cis PFPhAs was accompanied by significant cis-to-trans isomerization in aerated tetrahydrofuran solution. Series of high-cis and cis/trans poly[(fluorophenyl)acetylene]s (PFPhA) have been prepared by polymerization of (2-fluorophenyl)acetylene, (3-fluorophenyl)acetylene, and (4-fluorophenyl)acetylene with catalysts: [Rh(1,5-cyclooctadiene) OCH3](2) (high-cis PFPhAs) and tungsten(VI) oxychloride/tetraphenyltin (cis/trans PFPhAs). The molecular weight and configurational stability under various conditions at room temperature were studied for both PFPhAs series by means of size exclusion chromatography, H-1-NMR, and UV-vis techniques. All samples exhibited slow degradation when exposed to the atmosphere in the solid state; the rate of degradation was independent on the F-position on the Ph ring. The rate of degradation increased up to three orders of magnitude in the tetrahydrofuran solution where it was higher for high-cis polymers compared with their cis/trans counterparts. The degradation of high-cis PFPhAs was accompanied by significant cis-to-trans isomerization in aerated tetrahydrofuran solution. (en)
Title	Molecular Weight and Configurational Stability of Poly[(fluorophenyl) acetylene]s Prepared with Metathesis and Insertion Catalysts Molecular Weight and Configurational Stability of Poly[(fluorophenyl) acetylene]s Prepared with Metathesis and Insertion Catalysts (en)
skos:prefLabel	Molecular Weight and Configurational Stability of Poly[(fluorophenyl) acetylene]s Prepared with Metathesis and Insertion Catalysts Molecular Weight and Configurational Stability of Poly[(fluorophenyl) acetylene]s Prepared with Metathesis and Insertion Catalysts (en)
skos:notation	RIV/00216208:11310/10:10062506!RIV11-GA0-11310___
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(GA203/09/0803), P(GD203/08/H032), P(KAN100500652), S, Z(MSM0021620857)
http://linked.open...iv/cisloPeriodika	19
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Tišlerová, Iva Bondarev, Dmitrij Vohlídal, Jiří Zedník, Jiří Sedláček, Jan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	272404
http://linked.open...ai/riv/idVysledku	RIV/00216208:11310/10:10062506
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	polymer stability; polyacetylenes; isomer/isomerization; gel permeation chromatography (GPC); degradation; conjugated polymers (en)
http://linked.open.../riv/klicoveSlovo	isomer/isomerization polymer stability degradation conjugated polymers gel permeation chromatography (GPC) polyacetylenes
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[B8E6F8027755]
http://linked.open...i/riv/nazevZdroje	Journal of Polymer Science, Part A: Polymer Chemistry
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Interpenetrating polyacetylene based polymeric networks prepared by %22click%22 chemistry Advanced catalytic processes and materials Heterogeneous and hybrid nanocomposite materials for solar cells
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	48
http://linked.open...iv/tvurceVysledku	Bondarev, Dmitrij Sedláček, Jan Vohlídal, Jiří Zedník, Jiří Plutnarová, Iva
http://linked.open...ain/vavai/riv/wos	000282304500018
http://linked.open...n/vavai/riv/zamer	Nové molekulární systémy pro pokročilé aplikace prospěšné pro zdraví a šetrné k životnímu prostředí
issn	0887-624X
number of pages	14 (xsd:int)
http://localhost/t...ganizacniJednotka	11310

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