Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 25, Issue 1, Pages 270-274Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200300163
Keywords
atom transfer radical polymerization (ATRP); gradient; nanocomposites; polymer brushes; surface-initiated polymerization
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We report on preparing poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) gradient substrate, wherein molecular weight (MW) and grafting density (a) Of the surface-anchored PDMAEMA chains vary continuously in two orthogonal directions. Such a specimen is used to control the assembly of charged gold nanoparticles. Increasing MW and a of the grafted PDMAEMA cause an enhanced binding of the nanoparticles to PDMAEMA, thus leading to an orthogonal number density gradient of surface-bound gold nanoparticles.
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