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Temperature Responsive Solution Partition of Organic–Inorganic Hybrid Poly( N ‐isopropylacrylamide)‐Coated Mesoporous Silica Nanospheres
Author(s) -
Chung PoWen,
Kumar Rajeev,
Pruski Marek,
Lin Victor S.Y.
Publication year - 2008
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200701116
Subject(s) - materials science , poly(n isopropylacrylamide) , chemical engineering , mesoporous material , polymerization , mesoporous silica , nanoparticle , polymer , copolymer , transmission electron microscopy , polymer chemistry , chain transfer , raft , radical polymerization , nanotechnology , organic chemistry , catalysis , chemistry , engineering , composite material
A series of poly( N ‐isopropylacrylamide)‐coated mesoporous silica nanoparticle materials (PNiPAm‐MSNs) has been synthesized by a surface‐initiated living radical polymerization with a reversible addition–fragmentation chain transfer (RAFT) reaction. The structure and the degree of polymerization of the PNiPAm‐MSNs has been characterized by a variety of techniques, including nitrogen sorption analysis, 29 Si and 13 C solid‐state NMR spectroscopy, transmission electron microscopy (TEM), and powder X‐ray diffraction (XRD). The thermally induced changes of the surface properties of these polymer‐coated core–shell nanoparticles have been determined by examining their partition activities in a biphasic solution (water/toluene) at different temperatures.