Sol-gel monolithic anion-exchange column for capillary electrochromatography.


A single-step approach has been used to prepare a monolithic electrochromatographic column by sol-gel processing of an organofunctional silicon alkoxide precursor that contains a propyl-N,N,N-trimethylammonium group. We have found that the time of adding the porogen, poly(ethylene glycol), during the sol-gel reaction affected the separation performance… (More)


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