Determination of binding constants of multiple charged cyclodextrin complexes by ACE using uncorrected and ionic strength corrected actual mobilities of the species involved
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F20%3A00517791" target="_blank" >RIV/61388963:_____/20:00517791 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/elps.201900352" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/elps.201900352</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/elps.201900352" target="_blank" >10.1002/elps.201900352</a>
Alternative languages
Result language
angličtina
Original language name
Determination of binding constants of multiple charged cyclodextrin complexes by ACE using uncorrected and ionic strength corrected actual mobilities of the species involved
Original language description
In this study, the apparent binding constants and limiting mobilities of the multiply charged complexes of the Δ− and Λ−enantiomers of Ru(II)‐ and Fe(II)‐polypyridyl associates ([Ru(2,2′‐bipyridine)3]2+, [Ru(1,10‐phenanthroline)3]2+, and [Fe(1,10‐phenanthroline)3]2+) with single‐isomer 2,3‐diacetylated‐6‐sulfated‐cyclodextrins (CDs) (12Ac‐6S‐α‐CD, 14Ac‐7S‐β‐CD, and 16Ac‐8S‐γ‐CD) were determined by ACE using uncorrected and ionic strength corrected actual mobilities of the species involved. 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 species. In model 1, the nominal values of the charge numbers (zS,nom) and analytical concentrations (cS,nom) of the above CD selectors in the BGEs were applied for calculation of the BGE ionic strength, as usual. 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). Nevertheless, 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.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10406 - Analytical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Electrophoresis
ISSN
0173-0835
e-ISSN
—
Volume of the periodical
41
Issue of the periodical within the volume
7/8
Country of publishing house
DE - GERMANY
Number of pages
13
Pages from-to
523-535
UT code for WoS article
000500308100001
EID of the result in the Scopus database
2-s2.0-85076163030