Supercritical fluid chromatography for analysis of liquid crystalline materials of technological interest

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00639822" target="_blank" >RIV/68378271:_____/25:00639822 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/25:10504282

Výsledek na webu

<a href="https://doi.org/10.1016/j.chroma.2025.466413" target="_blank" >https://doi.org/10.1016/j.chroma.2025.466413</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.chroma.2025.466413" target="_blank" >10.1016/j.chroma.2025.466413</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Supercritical fluid chromatography for analysis of liquid crystalline materials of technological interest

Popis výsledku v původním jazyce

Fifteen novel liquid crystalline materials were used to survey the potential of supercritical fluid chromatography (SFC) with UV detection for separation of liquid crystal mixtures. A variety of separation conditions were used to outline the behaviour of this type of analytes in the SFC environment. Eight stationary phases were employed to evaluate their aptness for application in liquid crystal characterization including diol, 2-picolylamine, 1-aminoanthracene, pentafluorophenyl, octyl and octadecyl chemistries. Three types of octadecyl stationary phases were used to elucidate how the different particle type and the presence/absence of shielding polar groups affect the separation. Methanol, ethanol and 2- propanol and their mixtures with acetonitrile were tested as cosolvents and the effects of the mobile phase on retention/separation are also evaluated. The combined results provide a wide comparison of stationary phases based on their ability to distinguish structurally related compounds. The differences in chromatographic behaviour and its trends depending on both mobile and stationary phases selection highlight the versatility of the SFC. The solutes belong to two groups (ferroelectric nematic and photosensitive mesogens) and two corresponding mixtures were prepared as model samples, comprising eight and seven compounds, respectively. The pentafluorophenyl stationary phase (PFP) proved to be the most suitable from all tested columns - both prepared blends were separated to baseline on the XSelect HSS PFP column in under seven minutes.

Název v anglickém jazyce

Supercritical fluid chromatography for analysis of liquid crystalline materials of technological interest

Popis výsledku anglicky

Fifteen novel liquid crystalline materials were used to survey the potential of supercritical fluid chromatography (SFC) with UV detection for separation of liquid crystal mixtures. A variety of separation conditions were used to outline the behaviour of this type of analytes in the SFC environment. Eight stationary phases were employed to evaluate their aptness for application in liquid crystal characterization including diol, 2-picolylamine, 1-aminoanthracene, pentafluorophenyl, octyl and octadecyl chemistries. Three types of octadecyl stationary phases were used to elucidate how the different particle type and the presence/absence of shielding polar groups affect the separation. Methanol, ethanol and 2- propanol and their mixtures with acetonitrile were tested as cosolvents and the effects of the mobile phase on retention/separation are also evaluated. The combined results provide a wide comparison of stationary phases based on their ability to distinguish structurally related compounds. The differences in chromatographic behaviour and its trends depending on both mobile and stationary phases selection highlight the versatility of the SFC. The solutes belong to two groups (ferroelectric nematic and photosensitive mesogens) and two corresponding mixtures were prepared as model samples, comprising eight and seven compounds, respectively. The pentafluorophenyl stationary phase (PFP) proved to be the most suitable from all tested columns - both prepared blends were separated to baseline on the XSelect HSS PFP column in under seven minutes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Chromatography A

ISSN

0021-9673

e-ISSN

1873-3778

Svazek periodika

1762

Číslo periodika v rámci svazku

Nov

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

466413

Kód UT WoS článku

001588903100002

EID výsledku v databázi Scopus

2-s2.0-105017510899