| Project/Area Number |
23760041
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | National Institute for Materials Science (2013)
The Institute of Physical and Chemical Research (2011-2012) |
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Principal Investigator |
SHIMIZU Tomoko 独立行政法人物質・材料研究機構, 極限計測ユニット, 主任研究員 (00462672)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 走査プローブ顕微鏡 / フォトクロミック分子 / 表面吸着 / 自己組織化 / ジアリールエテン / 光異性化反応 / 表面界面物性 / 単分子デバイス / 光化学反応 |
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| Research Abstract |
Using scanning tunneling and non-contact atomic force microscopies, we have investigated adsorption structure, electronic states, thermal stability and photo-reactivity of diarylethene at the single molecular level. On Cu and Au substrates, thermal stability is lost and closed-form isomer becomes more stable than the open-form, which is opposite to solution and single crystalline phases. This is because of the charge transfer between the molecule and metal, resulting in the ionization of the molecule. We also found that the molecule reacted with NaCl insulating film, and formed self-organized superstructure by the interaction between Na ion and molecular dipole. Photo-reaction did not occur, which suggests the necessity of, for example, tip-enhanced effect. Finally we succeeded in high-resolution AFM to image internal structure of the molecule.
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