writer：Shuning Li, Xinlin Yang*, Wenqiang Huang*
keywords：Surface modification, Mercapto group, Gold metallic colloid
source：期刊
specific source：Macromol. Chem. Phys., 206, 1967-1972 (2005). DOI: 10.1002/macp.200500216
Issue time：2005年
Monodisperse polymer microspheres with functional mercapto groups on the surface were prepared from poly[(ethylene glycol dimethacrylate)-co-(2-hydroxyethyl methacrylate)], poly(EGDMA-co-HEMA), microspheres successively through esterification of the active hydroxyl groups with acryloyl chloride to introduce carbon-carbon double bonds and then the addition reaction of hydrogen sulfide to the double bond at pH 10–11. All of the polymer icrospheres were characterized by scanning electron microscopy (SEM) and FT-IR spectra. The mercapto-functionalized polymer microspheres were utilized as a stabilizer for gold metallic colloids through coordination of the mercapto group on the polymer with gold metallic nanoparticles, which were prepared by the reduction of gold chloride trihydrate with sodium borohydride as the reductant. The size and morphology of the gold on the microspheres were determined
to be of narrow dispersity (in the range 4–8 nm) by transmission electron microscopy (TEM).