Calix[4] open-chain crown ether-modified, vinyl-functionalized hybrid silica monolith for capillary electrochromatography

Electrophoresis
Yun TianHaibing Li

Abstract

A novel calix[4] open-chain crown ether (p-tert-butylcalix[4]arene-1,3-bis(allyloxyethy) ether)-modified, organic-inorganic hybrid silica-based monolithic column possessing vinyl ligands for CEC is described. The monolithic silica matrix containing a vinyl functionality was synthesized by in situ cocondensation of tetramethoxysilane (TMOS) and vinyltrimethoxysilane (VTMS) via sol-gel process and chemically modified with calix[4] open-chain crown ether by free radical polymerization procedure using alpha, alpha'-azobisisobutyronitrile (AIBN) as an initiator. Morphology of the monolithic column was examined by SEM and the successful incorporation of calix[4] open-chain crown ether to the vinyl-hybrid monolith was characterized by infrared (IR) spectra. Compared with an unmodified vinyl-hybrid monolithic column, slightly stronger EOF at pH >7.5 was observed for this monolithic column due to the ionization of phenolic hydroxyls on the lower rim of calix[4]arene. VTMS/TMOS ratios in the reaction mixture were varied and 1:4 was found to be optimum to obtain homogeneous monolith with good permeability. The performance of the column was evaluated by nucleotides, beta-blockers, neurotransmitters, and PAHs as test solutes and compared wi...Continue Reading

References

Mar 1, 1990·Journal of Analytical Toxicology·S J ParkJ Park
Aug 29, 2000·Journal of Chromatography. a·L A ColónA M Fermier
Aug 21, 2001·Analytical Chemistry·N TanakaN Ishizuka
Jul 25, 2003·Journal of Chromatography. a·A M Siouffi
Jul 9, 2004·Electrophoresis·Elena Barceló-BarrachinaM Teresa Galceran
Sep 10, 2004·Journal of Chromatography. a·Elizabeth Guihen, Jeremy D Glennon
Jun 2, 2005·Chemical Communications : Chem Comm·Hector ColonLuis A Colón
Aug 29, 2007·Analytica Chimica Acta·Tai-Ahn LinLai-Kwan Chau

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Citations

Jun 27, 2012·Journal of Separation Science·Tao Zhu, Kyung Ho Row
May 20, 2011·Journal of Separation Science·Haifeng HanShengxiang Jiang
Jul 22, 2014·Journal of Separation Science·Ran AnJinxiang Li
Jun 5, 2016·Journal of Pharmaceutical and Biomedical Analysis·Jialiang GuoZhengjin Jiang
Jun 17, 2016·Annual Review of Analytical Chemistry·Tohru Ikegami, Nobuo Tanaka
Feb 1, 2018·Journal of Separation Science·Romina Noel EchevarriaJosé Manuel Herrero-Martinez

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