About: Determination of acid-base dissociation constants of very weak zwitterionic heterocyclic bases by capillary zone electrophoresis

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About: Determination of acid-base dissociation constants of very weak zwitterionic heterocyclic bases by capillary zone electrophoresis Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Thermodynamic acid-base dissociation (ionization) constants (pKa) of seven very weak zwitterionic heterocyclic bases, originally designed as chiral Lewis base catalysts for enantioselective reactions, were determined by capillary zone electrophoresis (CZE). The pKa values of these compounds were found to be particularly low, in the range 0.04-0.32. Moreover, from the pH dependence of effective mobility of the bases, some other relevant characteristics, such as actual and absolute ionic mobilities and hydrodynamic radii of the acidic cationic forms of the bases were determined. Thermodynamic acid-base dissociation (ionization) constants (pKa) of seven very weak zwitterionic heterocyclic bases, originally designed as chiral Lewis base catalysts for enantioselective reactions, were determined by capillary zone electrophoresis (CZE). The pKa values of these compounds were found to be particularly low, in the range 0.04-0.32. Moreover, from the pH dependence of effective mobility of the bases, some other relevant characteristics, such as actual and absolute ionic mobilities and hydrodynamic radii of the acidic cationic forms of the bases were determined. (en)
Title	Determination of acid-base dissociation constants of very weak zwitterionic heterocyclic bases by capillary zone electrophoresis Determination of acid-base dissociation constants of very weak zwitterionic heterocyclic bases by capillary zone electrophoresis (en)
skos:prefLabel	Determination of acid-base dissociation constants of very weak zwitterionic heterocyclic bases by capillary zone electrophoresis Determination of acid-base dissociation constants of very weak zwitterionic heterocyclic bases by capillary zone electrophoresis (en)
skos:notation	RIV/61388963:_____/10:00351530!RIV11-GA0-61388963
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA203/08/1428), P(GA203/09/0675), Z(AV0Z40550506)
http://linked.open...iv/cisloPeriodika	-
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Kašička, Václav Ehala, Sille Lyapkalo, Ilya Sheshenev, Andrey Grishina, Anastasia
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 organické chemie a biochemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	253722
http://linked.open...ai/riv/idVysledku	RIV/61388963:_____/10:00351530
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	acidity constant; capillary zone electrophoresis; zwitterionic heterocyclic bases (en)
http://linked.open.../riv/klicoveSlovo	capillary zone electrophoresis acidity constant zwitterionic heterocyclic bases
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[7FA00F07081F]
http://linked.open...i/riv/nazevZdroje	Journal of Chromatography A
http://linked.open...in/vavai/riv/obor	CC
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Capillary electrophoresis with multidimensinal detection and its application to separation and characterization of biopolymers The utilization of gold nanoparticles in capillary electrophoresis and capillary electrochromatography
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	1217
http://linked.open...iv/tvurceVysledku	Ehala, Sille Kašička, Václav Lyapkalo, Ilya Sheshenev, Andrey Grishina, Anastasia
http://linked.open...ain/vavai/riv/wos	000285429700016
http://linked.open...n/vavai/riv/zamer	Regulace biologických procesů: Chemické modulátory vybraných systémů významných pro medicínu a zemědělství
issn	0021-9673
number of pages	6 (xsd:int)

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