| PREPARATION OF POLYMER MICROSPHERES WITH PYRIDYL GROUP AND THEIR STABILIZED GOLD METALLIC COLLOIDS |
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| 作者姓名： | Shu-ning Li Xin-lin Yang Wen-qiang Huang |
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| 作者单位： | Shu-ning Li，Xin-lin Yang~(**) Wen-qiang Huang~(**) Key Laboratory of Functional Polymer Materials，the Ministry of Education，Institute of Polymer Chemistry，Nankai University，Tianjin 300071，China |
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| 基金项目： | 国家自然科学基金
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the State Key Laboratory of Polymer Chemistry and Physics, Chinese Academy of Sciences |
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| 摘 要： | 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 pyridyl- functionalized 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.
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| 关 键 词： | 聚合物 小球体 蒸馏处理 吡啶甲醛 金属胶体 |
| 收稿时间： | 2006-09-27 |
| 修稿时间： | 2006-09-27 |
PREPARATION OF POLYMER MICROSPHERES WITH PYRIDYL GROUP AND THEIR STABILIZED GOLD METALLIC COLLOIDS |
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| Shu-ning Li Xin-lin Yang Wen-qiang Huang.PREPARATION OF POLYMER MICROSPHERES WITH PYRIDYL GROUP AND THEIR STABILIZED GOLD METALLIC COLLOIDS[J].Chinese Journal of Polymer Science,2007,0(6):555-563. |
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| Authors: | Shu-ning Li Xin-lin Yang Wen-qiang Huang |
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| Institution: | Key Laboratory of Functional Polymer Materials, the Ministry of Education, Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China |
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| Abstract: | 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 pyridyl-functionalized 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. |
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| Keywords: | Polymer microsphere Distillation-precipitation polymerization Pyridyl group Gold metallic colloids Catalysis COLLOIDS GOLD GROUP POLYMER MICROSPHERES catalytic properties behavior recycling in situ reduction model reaction chloride sodium borohydride coordination layer surface polymer microspheres containing group stabilizer gold |
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