Počet záznamů: 1
Determination of binding constants of cyclodextrin complexes with metal polypyridyl species by affinity CE using their ionic strength corrected and uncorrected actual mobilities
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SYSNO ASEP 0538653 Druh ASEP A - Abstrakt Zařazení RIV Záznam nebyl označen do RIV Zařazení RIV Není vybrán druh dokumentu Název Determination of binding constants of cyclodextrin complexes with metal polypyridyl species by affinity CE using their ionic strength corrected and uncorrected actual mobilities Tvůrce(i) Sázelová, Petra (UOCHB-X) RID, ORCID
Koval, Dušan (UOCHB-X) RID, ORCID
Severa, Lukáš (UOCHB-X) RID, ORCID
Teplý, Filip (UOCHB-X) RID, ORCID
Vigh, G. (US)
Kašička, Václav (UOCHB-X) RID, ORCIDZdroj.dok. Czech Chemical Society Symposium Series - ISSN 2336-7202
Roč. 18, č. 3 (2020), s. 82Poč.str. 1 s. Forma vydání Tištěná - P Akce Sjezd českých a slovenských chemických společností /72./ Datum konání 06.09.2020 - 09.09.2020 Místo konání Praha Země CZ - Česká republika Typ akce EUR Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova binding constants ; affinity capillary electrophoresis ; ionic strength Vědní obor RIV CB - Analytická chemie, separace Obor OECD Analytical chemistry CEP GA18-02597S GA ČR - Grantová agentura ČR Institucionální podpora UOCHB-X - RVO:61388963 Anotace The apparent binding constants and limiting mobilities of the multiply charged complexes of the Δ- and Λenantiomers of [Ru(bpy)3] 2+, [Ru(phen)3] 2+ and [Fe(phen)3] 2+ associates1 with 2,3-diacetylated-6-sulfated-(α,β,γ)- cyclodextrins (CDs) were determined by affinity capillary electrophoresis (ACE)2 . Two limiting models were tested for the ionic strength correction of the actual mobilities based on an empirical relation for the ionic strength correction of multivalent ionic species3 . In model 1, the nominal values of the charge numbers (zS,nom) and analytical concentrations (cS,nom) of the above CD selectors in the background electrolytes (BGEs) were applied for calculation of the BGE ionic strength, as usually. In model 2, the CD selectors were considered as singly charged species (zS = –1) with |zS,nom|-times higher concentrations in the BGE than their analytical concentrations (cS = |zS,nom| × cS,nom) in the calculation of the BGE ionic strength. In all three cases – with uncorrected actual mobilities as well as with actual mobilities corrected according to the two limiting models – the measured effective mobilities of the above enantiomers fit well the theoretical curves of their mobility dependences on the CD selectors concentrations in the BGE, with high average coefficients of determination (R2 = 0.9890–0.9995). The best physico-chemically meaningful values of the apparent binding constants and the limiting mobilities of the enantiomer-CDs complexes with low RSDs were obtained using the actual mobilities of the species involved corrected according to model 2. Pracoviště Ústav organické chemie a biochemie Kontakt asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Jana Procházková, Tel.: 220 183 418 Rok sběru 2021
Počet záznamů: 1