"Single-pot" approach towards the preparation of alkyl and polyfluoroalkyl organo-silica monolithic capillaries for reversed-phase liquid chromatography
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11160%2F18%3A10382540" target="_blank" >RIV/00216208:11160/18:10382540 - isvavai.cz</a>
Result on the web
<a href="http://onlinelibrary.wiley.com/doi/10.1002/jssc.201800688" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/jssc.201800688</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/jssc.201800688" target="_blank" >10.1002/jssc.201800688</a>
Alternative languages
Result language
angličtina
Original language name
"Single-pot" approach towards the preparation of alkyl and polyfluoroalkyl organo-silica monolithic capillaries for reversed-phase liquid chromatography
Original language description
Organo-silica monolithic capillary columns were prepared using thermally initiated polymerization of mixtures containing 3-(methacryloyloxy)propyltrimethoxysilane as the silicon-containing monomer, an aqueous acid catalyst, ethylene dimethacrylate as the cross-linker, a functional monomer selected from the group comprising octadecyl methacrylate, trifluoroethyl methacrylate, pentafluoropropyl methacrylate, and heptadecafluorodecyl methacrylate, toluene as the porogen, and 2,2'-azobisisobutyronitrile as the initiator. The permeability of the monoliths was controlled by varying the composition of the polymerization mixture. Chromatographic properties of resulting monolithic 100 mu m i.d. capillaries were evaluated utilizing four sets of probe compounds under isocratic elution conditions in the reversed-phase mode. Baseline separation of alkylbenzenes and the best steric selectivity were achieved using the octadecyl methacrylate monolithic column verifying that its surface was the most hydrophobic. In contrast, separation of a mixture containing polar compounds was observed using columns prepared in the absence of the functional monomer due to the presence of residual surface silanols at the pore surface. Polyfluoroalkyl stationary phases, especially those with a high number of fluorine atoms, exhibited the highest selectivity towards fluorine-containing analytes.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10406 - Analytical chemistry
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Separation Science
ISSN
1615-9306
e-ISSN
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Volume of the periodical
41
Issue of the periodical within the volume
19
Country of publishing house
DE - GERMANY
Number of pages
8
Pages from-to
3669-3676
UT code for WoS article
000446667500002
EID of the result in the Scopus database
2-s2.0-85052380927