物理化学学报 >> 1996, Vol. 12 >> Issue (10): 957-960.doi: 10.3866/PKU.WHXB19961022

研究简报 上一篇    

液晶CPBOB吸附的STM研究

汪振霞,谭忠印,朱传风,王乃新,白春礼   

  1. 中国科学院化学研究所，北京 100080|辽宁师范大学化学系，大连 116022
  • 收稿日期:1996-04-19 修回日期:1996-07-11 发布日期:1996-10-15
  • 通讯作者: 白春礼

Scanning Tunneling Microscope (STM) Studies of Liquid Crystals of CPBOB

Wang Zhen-Xia,Tan Zhong-Yin,Zhu Chuan-Feng,Wang Nai-Xin,Bai Chun-Li   

  1. Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080|Chemical Department,Liaoning Normal University,Dalian 116022
  • Received:1996-04-19 Revised:1996-07-11 Published:1996-10-15
  • Contact: Bai Chun-Li

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关键词: 混合法, 液晶, 扫描隧道显微镜(STM)

Abstract:

The adsorption structures of 4-cyanophenyl 4-butoxy benzoate(CPBOB) on graphite are studied by Scanning Tunneling Microscope(STM) at room temperature from the mixture of two different liquid crystals. STM images of CPBOB molecules are visualized for the first time with a near-atomic resolution. The adsorption structures are also investigated by molecular dynamical calculation. The STM images of CPBOB are stable in the period of 12 hours. These results indicate that liquid crystals of higher melting point on the surface of graphite can be studied by STM at the room temperature and the CPBOB molecules in a unit are orientated in the way of head to head.

Key words: Liquid crystals, Mixture, Scanning tunneling microscope