UV-polymerized butyl methacrylate monoliths with embedded carboxylic single-walled carbon nanotubes for CEC applications

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• 作者：María Navarro-Pascual-Ahuir ; Rafael Lucena…
• 关键词：Carboxylic carbon nanotubes ; Methacrylate monolithic columns ; UV initiation ; CEC ; Chiral separations
• 刊名：Analytical and Bioanalytical Chemistry
• 出版年：2014
• 出版时间：October 2014
• 年：2014
• 卷：406
• 期：25
• 页码：6329-6336
• 全文大小：1,067 KB
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• 作者单位：María Navarro-Pascual-Ahuir (1)
  Rafael Lucena (2)
  Soledad Cárdenas (2)
  Guillermo Ramis-Ramos (1)
  Miguel Valcárcel (2)
  José Manuel Herrero-Martínez (1)
  
  1. Department of Analytical Chemistry, University of Valencia, 46100, Valencia, Spain
  2. Department of Analytical Chemistry, Institute of Fine Chemistry and Nanochemistry, University of Córdoba, 14071, Córdoba, Spain
  
• ISSN：1618-2650

文摘

The preparation of polymeric monoliths with embedded carboxy-modified single-walled carbon nanotubes (c-SWNTs) and their use for capillary electrochromatography (CEC) is described. Carbon nanotube composites were obtained by preparing a polymerization mixture in the presence of increasing c-SWNT concentrations, followed by UV initiation. The novel stationary phases were studied by optical microscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Raman spectroscopy. Using short UV-polymerization times, the optimized porogenic solvent (a binary mixture of 1,4-butanediol and 2-propanol) gave rise to polymeric beds with homogenously dispersed embedded c-SWNTs. The CEC features of these monoliths were evaluated using polycyclic aromatic hydrocarbons (PAHs), non-steroidal anti-inflammatory drugs (NSAIDs) and chiral compounds. The monolith prepared in the presence of c-SWNTs showed enhanced resolution of the text mixtures, including a remarkable capability to separate enantiomers. Graphical Abstract UV-polymerized polymeric monoliths with embedded c-SWNTs for CEC applications