Journal
ADVANCED MATERIALS
Volume 18, Issue 11, Pages 1427-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200502341
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A stable solution composition gradient is generated inside a microchannel by varying the relative flow rates of two solutions that differ in composition. This solution gradient is used to synthesize a surface-grafted statistical-copolymer-brush composition gradient via surface-initiated atom transfer radical polymerization (ATRP; see schematic). Near-edge absorption fine structure spectroscopy confirms the continuous transition of surface composition from one end of the substrate to the other.
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