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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (7): 651-656. 上一篇    下一篇

研究论文

细乳液聚合制备载有CdTe的交联聚苯乙烯荧光微球

毛伟勇 龚 涛 王李欣 汪长春 杨武利*

  

  1. (聚合物分子工程教育部重点实验室和复旦大学高分子科学系 上海 200433)

  • 投稿日期:2008-07-14 修回日期:2008-10-23 发布日期:2009-04-14
  • 通讯作者: 杨武利

Preparation of CdTe-Loaded Crosslinked Polystyrene Fluorescent Microspheres by Miniemulsion Polymerization

Mao, Weiyong Gong, Tao Wang, Lixin Wang, Changchun Yang, Wuli*   

  1. (Education Ministry Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science,
    Fudan University, Shanghai 200433)
  • Received:2008-07-14 Revised:2008-10-23 Published:2009-04-14
  • Contact: Yang, Wuli

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被引次数

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利用改进的正相细乳液聚合法, 对疏水的CdTe纳米晶进行包覆, 得到了纳米级的交联聚苯乙烯荧光微球. 研究发现, 较高的引发剂浓度和较高的交联度有利于抑制相分离的发生和荧光的保持. 进而将3-甲基丙烯酰氧基丙基三甲氧基硅烷作为共聚单体, 得到了表面硅羟基功能化的聚苯乙烯荧光微球, 改善了微球在水相中的分散性, 并将此类荧光功能微球成功用于细胞成像.

关键词: 细乳液聚合, CdTe, 荧光微球

Through encapsulating hydrophobic CdTe nanocrystals, CdTe@P(St-DVB) hybrid fluorescent nanosized modified microspheres were prepared by modified miniemulsion polymerization. High initiator concentration and high crosslinking degree were necessary to inhibit the phase separation of polymer chains with nanocrystals and reserve luminescence. Further more, to make the hybrid microspheres with good dispersibility in aqueous media, 3-(methacryloxy)propyl triethoxysilane (MPS) was added to copolymerize with St and DVB, and after hydrolization the microspheres with silanol groups on the surface were obtained, which can be well dispersed in water and used for cell imaging.

Key words: miniemulsion polymerization, CdTe, fluorescent microsphere