2009 Fiscal Year Final Research Report
Characterization of the molecule bridging nano-link electrodes byusing scanning probe microscope
| Project/Area Number |
17069002
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
TADAHIRO Komeda Tohoku University, 多元物質科学研究所, 教授 (30312234)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAOKA Tsuyoshi 東北大学, 多元物質科学研究所, 講師 (90261479)
SAINOO Yasuyuki 東北大学, 多元物質科学研究所, 助教 (10375165)
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| Project Period (FY) |
2005 – 2009
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| Keywords | 1分子科学 / ナノ表面・界面 / 非弾性トンネル分光 |
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| Research Abstract |
Electron conductance through a single molecule has attracted attentions because it is possible to control structures, electronic states and functional groups of the molecules. In spite of intensive studies, there are many questions left unanswered. In this study, we tried to measure the path by detecting vibrational modes of the molecules which are caused by the current. We employed scanning tunneling microscope (STM) setting for this purpose, in which the substrate metal surface is an electrode and the STM-tip is the other electrode. The results showed that almost complete vibrational signals of the alkanethiol molecule can be detected. The result was compared with a density-functional calculation, which shows an excellent agreement. In addition, we have found that a certain portion of the current are hopping between neighboring molecules, instead of confined in a single molecule from one electrode to the other.
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[Journal Article] Direct Observation of Lanthanide(III)-Phthalocyanine Molecules on Au(111) by Using Scanning Tunneling Microscopy and Scanning Tunneling Spectroscopy and Thin-Film Field-Effect Transistor Properties of Tb(III)- and Dy(III)-2009
Author(s)
K. Katoh, Y. Yoshida, M. Yamashita, H. Miyasaka, B.K. Breedlove, T. Kajiwara, S. Takaishi, N. Ishikawa, H. Isshiki, Y.F. Zhang, T. Komeda, M. Yamagishi, J. Takeya
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Journal Title
Phthalocyanine Molecules, J. Am. Chem. Soc 131
Pages: 9967-76
Peer Reviewed
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