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"ATRP from a surface yields polymer brushes with relatively uniform molecular weights and affords control over brush thickness through variation of polymerization time," Bruening told C&EN. "We have recently used ATRP in aqueous solution to prepare giant poly(2-hydroxyethyl methacrylate) brushes with thicknesses approaching 1 mm.
"We are now trying to exploit this synthesis to develop unique polymer brush coatings for capillary electrochromatography," he said. "The length of these brushes increases the ratio of stationary phase to mobile phase in electrochromotography and should provide increased capacity for open-tubular capillary separations."
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