化学学报 ›› 2005, Vol. 63 ›› Issue (20): 1913-1916. 上一篇    下一篇

研究论文

湿度对Cu/TCNQ金属有机双层膜化学传质的影响研究

吴玮巍,蒋益明,郭峰,钟澄,刘平,李劲*   

  1. (复旦大学材料科学系 上海 200433)
  • 收稿日期:2005-02-05 修回日期:2005-06-29 出版日期:2005-10-28 发布日期:2010-12-10
  • 通讯作者: 李劲

Influence of Humidity on Chemical Transport Behavior in Cu/TCNQ Metal-organic Thin Film

WU Wei-Wei, JIANG Yi-Ming, GUO Feng, ZHONG Cheng, LIU Ping, LI Jing*   

  1. (Department of Materials Science, Fudan University, Shanghai 200433)
  • Received:2005-02-05 Revised:2005-06-29 Online:2005-10-28 Published:2010-12-10
  • Contact: LI Jing

采用真空蒸发方法制备了Cu/TCNQ金属机双层膜. 系统研究了湿度对CuTCNQ络合物形成过程的影响规律, 结果表明湿度对膜的化学反应传质过程有明显加速作用. 过程机制在干燥条件与湿度作用条件下有本质不同: 前者为固体化学扩散机制, 而后者为水溶液电化学反应机制. 进一步深入分析传质时间与湿度的关系后发现, 湿度条件下薄膜对水分子的吸附是反应传质速度的控制步骤.

关键词: CuTCNQ, 薄膜, 传质, 湿度, 电化学反应

A Cu/TCNQ metal-organic thin film was prepared by vacuum deposition. The influence of humidity on chemical transport behavior in the film was studied. The results show that the transport is obviously accelerated by environmental humidity. The transport mechanism in the film in dry and wet air was essentially different. The CuTCNQ complex was formed respectively through solid chemical transport in dry environment and electrochemical reaction in aqueous solution in wet environment. The adsorption of H2O molecules on the film is found to be the control step of the transport under the wet condition.

Key words: CuTCNQ, thin film, transport, humidity, electrochemical reaction