Temperature and pH-responsive single-walled carbon nanotube dispersions.
Solubilization of single-walled carbon nanotubes (SWNTs) using noncovalently interacting polymer surfactants in aqueous media has opened up a new vista of SWNTs in biology and medicine. In many potential applications, it is desirable to control the dispersion or aggregation of SWNTs in solvents with external stimuli. Here we report two "smart" SWNT dispersions that respond to temperature and pH changes in poly(N-isopropylacrylamide) and poly-L-lysine solutions.
Wang
Dan
D
Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, USA.
Chen
Liwei
L
D000180:Acrylic Resins / Q000737:chemistry*; D003102:Colloids / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D009391:Nephelometry and Turbidimetry; D010316:Particle Size; D044367:Phase Transition; D011107:Polylysine / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D013501:Surface-Active Agents / Q000737:chemistry*; D013696:Temperature
D000180:Acrylic Resins; D003102:Colloids; D037742:Nanotubes, Carbon; D011108:Polymers; D013501:Surface-Active Agents; D011107:Polylysine; C052970:poly-N-isopropylacrylamide