Polar-embedded and polar-endcapped phases have become widespread over the past decade. When compared to classical alkylsilicas, they offer an alternative selectivity profile, increased stability in highly aqueous mobile phases, and improved peak shape for basic analytes. This mini-review summarizes current knowledge and applications of these phases, including the recent development of a series of N-methylamide embedded phases, prepared using supercritical carbon dioxide.
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O’Sullivan et al. (2010) studied this question.
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