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Assembly of Nanoparticles using Surface‐Grafted Orthogonal Polymer Gradients
Author(s) -
Bhat Rajendra R.,
Tomlinson Michael R.,
Genzer Jan
Publication year - 2004
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200300163
Subject(s) - methacrylate , nanoparticle , materials science , polymer , colloidal gold , grafting , polymer chemistry , surface modification , substrate (aquarium) , self assembly , surface (topology) , nanotechnology , chemical engineering , copolymer , composite material , geometry , oceanography , geology , engineering , mathematics
Summary: We report on preparing poly(2‐(dimethylamino)ethyl methacrylate) (PDMAEMA) gradient substrate, wherein molecular weight (MW) and grafting density ( σ ) 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 σ 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.