High-resolution performance of pillar[6]arene functionalized with imidazolium ionic liquids for gas chromatography

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Pillar[n]arenes (P[n]A, n = 5-10) have attracted much attention because of their highly symmetric pillar-shaped architecture with π-electron rich cavity. Nevertheless, the use of ionic liquid functionalized P[n]A in chromatography has not been reported up to data. This work reports the investigation of the imidazolium ionic liquids functionalized pillar[6]arene (P6A-C10-IM-C8[NTf2]) as the stationary phase for gas chromatography (GC). The statically coated P6A-C10-IM-C8[NTf2] column (0.25 mm i.d.) showed moderate polarity and high column efficiency of 4733 plates/m determined by n-dodecane at 120 °C (k = 2.29). Owing to its unique amphiphilic conformation, the P6A-C10-IM-C8[NTf2] showed good column inertness and resolving capability for a wide range of analytes and isomers. Particularly, the P6A-C10-IM-C8[NTf2] column exhibited distinctly advantageous performance for the challenging isomers of halogenated benzenes, benzaldehydes, phenols and anilines over the common commercial columns, namely 5% phenyl methyl polysiloxane (HP-5) and 35% phenyl methyl polysiloxane (HP-35). In addition, it exhibited good column repeatability and reproducibility with RSD values on the retention times less than 0.05% for run-to-run, 0.38% for day-to-day and 2.94% for column-to-column, respectively. This work demonstrates the promising future of ionic liquid P[n]A stationary phases for chromatographic separations.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:273

Enthalten in:

Talanta - 273(2024) vom: 01. Apr., Seite 125877

Sprache:

Englisch

Beteiligte Personen:

Sun, Tao [VerfasserIn]
Song, Yanli [VerfasserIn]
Zhang, YuanYuan [VerfasserIn]
Ba, Mengyi [VerfasserIn]
Li, Wen [VerfasserIn]
Cai, Zhiqiang [VerfasserIn]
Hu, Shaoqiang [VerfasserIn]
Liu, Xianming [VerfasserIn]
Zhang, Shusheng [VerfasserIn]

Links:

Volltext

Themen:

Gas chromatography
Imidazolium ionic liquid
Journal Article
Pillararene
Separation
Stationary phase

Anmerkungen:

Date Revised 07.04.2024

published: Print-Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.1016/j.talanta.2024.125877

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369501535