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Affinity capillary electrophoresis applied to chiral separations of diquats and to determination of the stability constants of their complexes with sulfated cyclodextrins
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SYSNO ASEP 0493495 Document Type C - Proceedings Paper (int. conf.) R&D Document Type The record was not marked in the RIV Title Affinity capillary electrophoresis applied to chiral separations of diquats and to determination of the stability constants of their complexes with sulfated cyclodextrins Author(s) Kašička, Václav (UOCHB-X) RID, ORCID
Bílek, Jan (UOCHB-X)
Koval, Dušan (UOCHB-X) RID, ORCID
Sázelová, Petra (UOCHB-X) RID, ORCID
Talele, Harish Ramesh (UOCHB-X) ORCID
Severa, Lukáš (UOCHB-X) RID, ORCID
Reyes Gutierrez, Paul Eduardo (UOCHB-X) RID, ORCID
Teplý, Filip (UOCHB-X) RID, ORCIDSource Title Advances in Chromatography and Electrophoresis & Chiranal 2018. - Olomouc : Palacký University, 2018 / Bednář P. ; Cechová M. ; Kučera L. ; Kurka O. Pages s. 56-57 Number of pages 2 s. Publication form Print - P Action Advances in Chromatography and Electrophoresis & Chiranal 2018 Event date 29.01.2018 - 01.02.2018 VEvent location Olomouc Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords affinity capillary electrophoresis ; chiral separations ; diquats Subject RIV CB - Analytical Chemistry, Separation OECD category Analytical chemistry R&D Projects GA15-01948S GA ČR - Czech Science Foundation (CSF) GA17-10832S GA ČR - Czech Science Foundation (CSF) Institutional support UOCHB-X - RVO:61388963 Annotation Affinity capillary electrophoresis (ACE) using an aqueous 22/35 mM sodium/phosphate buffer, pH 2.5, as the background electrolyte (BGE), and 6 mM randomly highly sulfated alpha-, beta- and gamma-cyclodextrins (CDs) as chiral selectors has been successfully applied for separation of (P)- and (M)-enantiomers of a series of eleven new diquats (DQs) and for estimation of the strength of their complexes with the above CDs. The apparent stability constants of the DQs-CDs complexes were determined from the simultaneous ACE measurements of the dependence of effective electrophoretic mobilities of (P)- and (M)-enantiomers of DQs on the concentrations of CDs in the BGE by nonlinear regression analysis. The DQs enantiomers formed strong complexes with all three types of CDs with the apparent stability constants in the range (7.80 547.4) × 103 L/mol. Workplace Institute of Organic Chemistry and Biochemistry Contact asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Jana Procházková, Tel.: 220 183 418 Year of Publishing 2019
Number of the records: 1