化学学报 ›› 2003, Vol. 61 ›› Issue (11): 1877-1880. 上一篇    下一篇

研究论文

双偶极半菁衍生物/H4SiW12O40自组装多层膜的研究

王丽颖;高丽华;王科志   

  1. 北京工商大学化学与环境工程学院;北京师范大学化学系
  • 发布日期:2003-11-15

Study on Self-assembled Multilayer Film Formed by a Bipolar Hemicyanine Derivative and H_2SiW_(12)O_(40)

Wang Liying;Gao Lihua;Wang Kezhi   

  1. School of Chemical and Environmental Engineering, Beijing Technology and Business University;Department of Chemistry, Beijing Normal University
  • Published:2003-11-15

通过交替吸附H_4SiW_(12)O_(40)和双偶极半菁衍生物制备了一个新颖的无机- 有机杂化自组装多层膜。紫外可见光谱和X射线衍射研究证实了半菁衍生物 /H_4SiW_(12)O_(40)多层膜可被均匀沉积厚达至少12层,具有平均膜厚5.3nm(半菁 阳离子层加SiW_(12)O_(40)~(4-)层)的二维有序结构,膜中半菁衍生物与H_4SiW_ (12)O_(40)间发生了较强的电荷转移作用。循环伏安研究表明,薄膜具有较好的电 化学活性。

关键词: 杂多酸, 半菁, 紫外分光个分光光度法, X射线衍射分析, 钨酸 P, 硅酸 P, 电荷转移, 循环伏安法

A new self-assembled multilayer film is prepared by alternating adsoiption of tLiSiWi2 O4O and a hemicyanine derivative. UV-vis spectroscopy and X-ray diffraction analysis demonstrate that the film is uniformly deposited up to at least 12 layers with mean film thickness being 5.3 run per layer (the hemicyanine cation layer and SiWiaO^)" layer) , and that the charge transfer occurs between H^SiW^O^ and the hemicyanine derivative in the film. Cyclic voltammetry shows that this novel inorganic-organic composite film is of good electrochemical activity.

Key words: HETEROPOLYACID, hemicyanine, UV, XRD, TUNGSTIC ACID P, SILICIC ACID P, CHARGE TRANSFER, CYCLOVOLTAMGRAPH

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