期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 13, 期 9, 页码 3731-3740出版社
SPRINGER
DOI: 10.1007/s11051-011-0295-1
关键词
Carbon nanotubes; Nanocomposites Polymer; Sol-gel; Coating; Synthesis
资金
- NSF China [20534010, 20625412]
- MOST [G2003CB615605]
The functional copolymer bearing alkoxysilyl and pyrene groups, poly[3-(triethoxysilyl)propyl methacrylate]-co-[(1-pyrene-methyl) methacrylate] (TEPM13-co-PyMMA(3)), was synthesized via atom transfer radical polymerization. Attributing the pi-pi interaction of pyrene units with the walls of single-walled carbon nanotubes (SWNTs), this polymer could disperse and exfoliate SWNTs in different solvents through physical interaction as demonstrated by TEM, UV/Vis absorption, and FT-IR analysis. The alkoxysilyl groups functionalized SWNTs were reacted with different inorganic precursors via sol-gel reaction, and, as a results, silica, titania, and alumina were coated onto the surface of SWNTs, respectively via copolymers as a molecular glue. The nanocomposites of ceramic oxides/SWNTs were characterized by SEM analysis. Dependent upon the feed, the thickness of inorganic coating can be tuned easily. This study supplies a facile and general way to coat SWNTs with ceramic oxides without deteriorating the properties of pristine SWNTs.
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