| STM studies on adsorbed liquid crystal on HOPG |
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| 作者姓名： | 徐庆敏 谭忠印 王琛 马金 杨林静 李清 朱传凤 王乃新 白春礼 |
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| 作者单位： | 1. Institute of Chemistry，Chinese Academy of Sciences，Beijing 100080，China; 2. Department of Chemistry，Liaoning Normal University，Da |
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| 基金项目： | ProjectsupportedbytheNationalNaturalScienceFoundationofChina (GrantNo .196 34 0 10 ) |
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| 摘 要： | Ｓｃａｎｎｉｎｇｔｕｎｎｅｌｉｎｇｍｉｃｒｏｓｃｏｐｅ(ＳＴＭ)ｈａｓｒｅｃｅｎｔｌｙｂｅｅｎａｐｐｌｉｅｄｔｏｔｈｅｓｔｕｄｙｏｆｔｈｅａｄｓｏｒｐｔｉｏｎｏｆｏｒｇａｎｉｃａｎｄｂｉｏｌｏｇｉｃａｌｍｏｌｅｃｕｌｅｓｉｎｖａｒｉｏｕｓｅｎｖｉｒｏｎｍｅｎｔｓ,ｉｎｃｌｕｄｉｎｇｌｉｑｕｉｄｃｒｙｓｔａｌ(ＬＣ),ｏｎｓｕｒｆａｃｅ.Ｉｎｐａｒｔｉｃｕｌａｒ,4＿ｎ＿ａｌｋｙｌ4′ｃｙａｎｏｂｉｐｈｅｎｙｌｓ(ｍＣＢ,ｗｈｅｒｅｍｉｓｔｈｅｎｕｍｂｅｒｏｆｃａｒｂｏｎｓｉｎｔｈｅａｌｋｙｌｇｒｏｕｐ)ｏｎ…
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| 收稿时间： | 4 April 1998 |
STM studies on adsorbed liquid crystal on HOPG |
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| Qingmin Xu,Zhongyin Tan,Chen Wang,Jin Ma,Linjing Yang,Qing Li,Chuanfeng Zhu,Naixin Wang,Chunli Bai.STM studies on adsorbed liquid crystal on HOPG[J].Science in China(Chemistry),1998,41(6):640-645. |
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| Authors: | Qingmin Xu Zhongyin Tan Chen Wang Jin Ma Linjing Yang Qing Li Chuanfeng Zhu Naixin Wang Chunli Bai |
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| Institution: | (1) Institute of Chemistry, Chinese Academy of Sciences, 100080 Beijing, China;(2) Department of Chemistry, Liaoning Normal University, 116029 Dalian, China |
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| Abstract: | The adsorbed structures of 4-penty14’-methoxy-phenylbenzoate on highly oriented pyrolytic graphite (HOPG) are studied by scanning
tunneling microscope (STM) at room temperature with near atomic level resolution. It is observed that the STM images could
reveal the regular two-dimensional arrangement of molecules. The computer calculation is performed to determine the contrast
mechanism of the STM images associated with the tip-to-sample electric field. The results indicate that the STM images of
the liquid crystal may be jointly affected by the modulation of the local work function of the substrate covered with the
polarizable molecular adsorbates and the variation of density of states of the adsorbed molecules.
Project supported by the National Natural Science Foundation of China (Grant No. 19634010) |
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| Keywords: | liquid crystal STM molecular simulation |
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