About: Effect of cyclodextrins on pH-induced conformational transition of poly(methacrylic acid)

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About: Effect of cyclodextrins on pH-induced conformational transition of poly(methacrylic acid) Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	A pH-induced conformational transition (CT) of atactic poly(methacrylic acid) (PMMA) from the contracted to expanded conformation was investigated by viscometry, potentiometric titration, and anthracene solubilisation in the presence of - glucose, α-cyclodextrin (αCD), and γ-cyclodextrin (γCD), respectively. No effect of glucose and αCD on CT was observed. On the other hand, the CT characteristic features were absent in the presence of γCD. The different effects of the co-solutes indicate that the interaction between PMAA and γCD corresponds to the partial inclusion of the PMAA chain into the γCD cavity. The viscometry and anthracene solubilisation imply that γCD promotes the expanded conformation of PMAA at low pH. The potentiometric behaviour corresponds to that of the contracted PMMA conformation. Thus the results suggest the hierarchical picture of the PMAA conformation at low pH in which the local arrangement of the PMAA chain is a prerequisite for clustering on a larger scale. A pH-induced conformational transition (CT) of atactic poly(methacrylic acid) (PMMA) from the contracted to expanded conformation was investigated by viscometry, potentiometric titration, and anthracene solubilisation in the presence of - glucose, α-cyclodextrin (αCD), and γ-cyclodextrin (γCD), respectively. No effect of glucose and αCD on CT was observed. On the other hand, the CT characteristic features were absent in the presence of γCD. The different effects of the co-solutes indicate that the interaction between PMAA and γCD corresponds to the partial inclusion of the PMAA chain into the γCD cavity. The viscometry and anthracene solubilisation imply that γCD promotes the expanded conformation of PMAA at low pH. The potentiometric behaviour corresponds to that of the contracted PMMA conformation. Thus the results suggest the hierarchical picture of the PMAA conformation at low pH in which the local arrangement of the PMAA chain is a prerequisite for clustering on a larger scale. (en)
Title	Effect of cyclodextrins on pH-induced conformational transition of poly(methacrylic acid) Effect of cyclodextrins on pH-induced conformational transition of poly(methacrylic acid) (en)
skos:prefLabel	Effect of cyclodextrins on pH-induced conformational transition of poly(methacrylic acid) Effect of cyclodextrins on pH-induced conformational transition of poly(methacrylic acid) (en)
skos:notation	RIV/61389013:_____/11:00364990!RIV12-AV0-61389013
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA202/09/2078), Z(AV0Z40500505)
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Walterová, Zuzana Horský, Jiří Podešva, Jiří
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	Ústav makromolekulární chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	196220
http://linked.open...ai/riv/idVysledku	RIV/61389013:_____/11:00364990
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	cyclodextrins; inclusion complexes; polyelectrolytes (en)
http://linked.open.../riv/klicoveSlovo	cyclodextrins inclusion complexes polyelectrolytes
http://linked.open...odStatuVydavatele	SK - Slovenská republika
http://linked.open...ontrolniKodProRIV	[E0BA5B38E497]
http://linked.open...i/riv/nazevZdroje	Chemical Papers
http://linked.open...in/vavai/riv/obor	BO
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Bioinspired nanoparticles sensitive to environment stimuli
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	65
http://linked.open...iv/tvurceVysledku	Horský, Jiří Podešva, Jiří Walterová, Zuzana
http://linked.open...ain/vavai/riv/wos	000297373700014
http://linked.open...n/vavai/riv/zamer	Progresivní makromolekulární materiály a supramolekulární systémy: syntéza a studium vlastností, jevů a možností využití pro speciální aplikace a moderní technologie
issn	0366-6352
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.2478/s11696-011-0080-8

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