扫描隧道显微镜
分子
化学
量子隧道
苯
结晶学
化学物理
纳米技术
扫描探针显微镜
亚甲基
材料科学
光电子学
有机化学
作者
Kasper Moth‐Poulsen,Lionel Patrone,Nicolai Stuhr‐Hansen,Jørn B. Christensen,Jean‐Philippe Bourgoin,Thomas Bjørnholm
出处
期刊:Nano Letters
[American Chemical Society]
日期:2005-03-03
卷期号:5 (4): 783-785
被引量:77
摘要
A systematic study of the relationship between the molecular structure of a series of thiol end-capped oligo-phenylenevinylenes (OPVs) and the coherent electronic transmission at the single molecule level was measured by scanning tunneling microscopy (STM). This reveals a significant change in the electronic transparency of various OPV derivatives due to the insertion of a methylene spacer group or due to nitro group substitution. Apparently, changes in the conjugation path through the central benzene ring from para to meta substitution does not have a profound effect on the electronic transparency of the molecules.
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