Preparation of platinum nanoparticles in salt-induced micelles of dumbbell-shaped ABA copolymer

Wuu Jyh Liang, Chia Hui Lien, Ping Lin Kuo

研究成果: Article同行評審

12 引文 斯高帕斯(Scopus)

摘要

The interaction of a water-soluble ABA type of dumbbell-shaped polyethyleniminated copolymers (D400(EI)8) with H 2PtCl6 in aqueous medium is studied by means of UV-visible absorption spectra, dynamic light scattering (DLS) measurements, and transmission electron microscopy (TEM). From TEM images of the stained polymer, it is evident that the spherical and well-structured polymer micelles are formed by the introduction of H2PtCl6, and totally nonstructured micelles are formed from D400(EI)8 itself. These findings coincide with the results obtained from DLS measurements, where the narrowly distributed polymer aggregates are remarkably observed. Moreover, it is directly evidenced from TEM that the reduced Pt(0) nanoparticles are embedded in the polyethylenimine (PEI) block at the exterior of micelles, whereas the polyoxypropylene (PPO) block is surrounded by the PEI block. Additionally, the resulting Pt(0) colloids are very stable for at least 4 months.

原文English
頁(從 - 到)371-375
頁數5
期刊Journal of Colloid And Interface Science
294
發行號2
DOIs
出版狀態Published - 2006 二月 15

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 生物材料
  • 表面、塗料和薄膜
  • 膠體和表面化學

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