Preparation of Crosslinked Poly(Ethyleneglycol Dimethacrylate-co-4-Vinylpyridine) Microspheres and Their Application as Stabilizer for Gold Metallic Colloid
作者：Shuning Li, Xinlin Yang*, and Wenqiang Huang*
關鍵字：Polymer microsphere; Distillation-precipitation polymerization; Pyridyl group; Gold metallic colloids; Catalysis
論文來源：期刊
具體來源：Chin. J. Polym. Sci., 25 (6), 555-563 (2007).
發表時間：2007年
Narrow disperse poly(ethyleneglycol dimethacrylate-co-4-vinylpyridine) (poly(EGDMA-co-4-VPy)) microspheres were prepared by distillation-precipitation copolymerization of ethyleneglycol dimethacrylate (EGDMA) and 4-vinylpyridine (4-VPy) with 2,2￠-azobisisobutyronitrile (AIBN) as initiator in neat acetonitrile. The polymer microspheres containing pyridyl group were then utilized as stabilizer for gold metallic colloids with the diameter around 7 nm, which were prepared by the in situ reduction of gold chloride trihydrate with sodium borohydride through the coordination of the pyridyl group on
the gel layer and surface of the microsphere with the gold metallic nano-particles. The catalytic properties of the pyridylfunctionalized microsphere-stabilized gold metallic colloids and the behavior of the stabilized-catalyst for the recycling were investigated with reduction of 4-nitrophenol to 4-aminophenol as a model reaction.