Preparation of a high performance liquid chromatography column based on N-(3,5-dinitrobenzoyl)-aminoundecyl silica for the resolution of liquid crystal mixtures

Autor:	Jae Jeong Ryoo, Jin Ki Kuen, Myung Ho Hyun, Young Han Jeong, Sung Ok Han, Jae Hak Lee, Kwang-Pill Lee, Sang Cheol Han
Rok vydání:	2001
Předmět:	Chromatography Chemistry Elution Silica gel Analytical chemistry Reversed-phase chromatography High-performance liquid chromatography Analytical Chemistry Chiral column chromatography chemistry.chemical_compound Column chromatography Liquid crystal Chromatography column Spectroscopy
Zdroj:	Microchemical Journal. 68:127-133
ISSN:	0026-265X
DOI:	10.1016/s0026-265x(00)00139-9
Popis:	A bonded silica stationary phase (SP 1 ) was prepared by connecting N -(3,5-dinitrobenzoyl) aminoundecylsilane to silica gel. The stationary phase was applied in resolving a liquid crystal mixture with a reversed phase high performance liquid chromatography (HPLC) mode and the chromatographic resolution results were compared with those on an octadecylsilane (ODS) column. From the comparison of the resolution results on SP 1 and the ODS column, we found the new stationary phase was better than the ODS column in resolving a liquid crystal mixture and the elution orders of some liquid crystal were changed. The better resolution and the change in the elution orders on the new column might be originated from additional π–π interaction between the π-acidic 3,5-dinitrobenzoyl group of the stationary phase and the π-basic aromatic group of liquid crystals.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f7d6a835b1097dca4821daa5e49081fc https://doi.org/10.1016/s0026-265x(00)00139-9 Zobrazit plný text záznamu Full Text from ScienceDirect