Hlavní stránka > Konferenční materiály > Příspěvky z konference > Affinity capillary electrophoresis applied to chiral separations of diquats and to determination of the stability constants of their complexes with sulfated cyclodextrins
Název:
Affinity capillary electrophoresis applied to chiral separations of diquats and to determination of the stability constants of their complexes with sulfated cyclodextrins
Autoři:
Kašička, Václav ; Bílek, Jan ; Koval, Dušan ; Sázelová, Petra ; Talele, Harish Ramesh ; Severa, Lukáš ; Reyes Gutierrez, Paul Eduardo ; Teplý, Filip Typ dokumentu: Příspěvky z konference Konference/Akce: Advances in Chromatography and Electrophoresis & Chiranal 2018, Olomouc (CZ), 20180129
Rok:
2018
Jazyk:
eng
Abstrakt: 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.
Klíčová slova:
affinity capillary electrophoresis; chiral separations; diquats Číslo projektu: GA15-01948S (CEP), GA17-10832S (CEP) Poskytovatel projektu: GA ČR, GA ČR Zdrojový dokument: Advances in Chromatography and Electrophoresis & Chiranal 2018
Instituce: Ústav organické chemie a biochemie AV ČR
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Informace o dostupnosti dokumentu:
Dokument je dostupný v příslušném ústavu Akademie věd ČR. Původní záznam: http://hdl.handle.net/11104/0286857