| 초록 |
Organophillic colloidal nanoparticles with a silica core and a surface-grafted polyglutamate shell have been prepared by the ring-opening polymerization of benzyl-L-glutamate N-carboxyanhydride(BLG-NCA) monomer from (g-aminopropyl) triethoxysilane(APS) pretreated silica nanoparticles. The resulting poly(g-benzyl-a,L-glutamate) coated nanoparticles are characterized by Electron Microscopy(SEM), Dynamic Light Scattering(DLS), Infrared Spectroscopy(FT-IR), and Polarized Optical Microscopy. FT-IR spectra show an a-helix conformation of the grafted polyglutamate shell without other conformations. Dynamic light scattering data show the thickness of the polyglutamate shell is about 60nm. The polarized optical microscope images show the PBLG coated nanoparticles have liquid crystal property. |
