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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (22): 2522-. 上一篇    下一篇

研究论文

导电高分子PEDOT/PSS稳定的Pt3Co纳米粒子的制备及电、磁性

戴兢陶1，杜玉扣1，杨平*,1，徐景坤2   

  1. (1苏州大学化学化工学院 苏州 215123)
    (2江西科技师范学院江西省有机功能分子重点实验室 南昌 330013)
  • 投稿日期:2007-02-13 修回日期:2007-06-01 发布日期:2007-11-28
  • 通讯作者: 杨平

Preparation, Conductivity, and Magnetic Properties of Pt3Co-PEDOT/PSS Nanocomposite

DAI Jing-Tao1; DU Yu-Kou1; YANG Ping*1; XU Jing-Kun2   

  1. (College of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215123)
    (Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013)
  • Received:2007-02-13 Revised:2007-06-01 Published:2007-11-28
  • Contact: YANG Ping

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利用一步共还原法在导电高分子聚二氧乙基噻吩/聚对苯乙烯磺酸(PEDOT/PSS)水溶液中合成了磁性纳米复合物Pt3Co-PEDOT/PSS. 利用透射电镜(TEM)、X射线衍射(XRD)、拉曼光谱、超导量子干涉仪(SQUID)对其进行了表征.结果表明Pt3Co纳米粒子为面心立方结构(fcc), 粒子平均粒径为9.6 nm, 标准偏差为2.4 nm. 用旋转涂膜法制备的Pt3Co-PEDOT/PSS薄膜导电率(?)在1.6～4.0 S/cm之间. 当温度在阻塞温度(TB, 110.5 K)以上时, 纳米复合物Pt3Co-PEDOT/PSS显示出超顺磁性, 低于TB时呈铁磁性, 在5 K时其剩磁(Mr)和矫玩力(Hc)分别为4.1 emu/g和701 Oe(奥斯特).

关键词: Pt3Co磁性纳米粒子, 聚二氧乙基噻吩/聚对苯乙烯磺酸导电高分子, 导电性, 磁性

Magnetic nanocomposite Pt3Co-PEDOT/PSS was synthesized in an aqueous solution of conducting polymers poly(3,4-ethylenedioxythiophene)/poly(styrene-4-sulfonate) (PEDOT/PSS) using a one- step co-reduction method and characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), FTIR spectroscopy, and superconducting quantum interference device (SQUID) techniques, respectively. The results showed that the average size and standard deviation of Pt3Co-PEDOT/PSS nanocomposite were 9.6 and 2.4 nm, respectively. The structure of Pt3Co nanoparticle is face centered cube (fcc). The films made of the magnetic nanocomposite of Pt3Co-PEDOT/PSS were conductive with conductivity between 1.6 and 4.0 S/m. The nanocomposite is superparamagnetic above the blocking temperature (TB＝110.5 K) while it is ferromagnetic with Hc (701 Oe) and Mr (4.1 emu/g) at 10 K (below TB).

Key words: Pt3Co magnetic nanoparticle, poly(3,4-ethylenedioxythiophene)/poly(styrene-4-sulfonate) conducting polymer, conductivity, magnetic property