Elucidation of Electron Transport Properties of Small Gold Nanoparticle Superlattices Connected with Parallel and Perpendicular π-Conjugated System
Project/Area Number |
19205016
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Functional materials chemistry
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Research Institution | University of Tsukuba |
Principal Investigator |
TERANISHI Toshiharu University of Tsukuba, 大学院・数理物質科学研究科, 教授 (50262598)
|
Co-Investigator(Kenkyū-buntansha) |
金原 正幸 筑波大学, 大学院・数理物質科学研究科, 助教 (40375415)
|
Co-Investigator(Renkei-kenkyūsha) |
KANEHARA Masayuki 筑波大学, 大学院・数理物質科学研究科, 助教 (40375415)
|
Project Period (FY) |
2007 – 2009
|
Project Status |
Completed (Fiscal Year 2009)
|
Budget Amount *help |
¥45,500,000 (Direct Cost: ¥35,000,000、Indirect Cost: ¥10,500,000)
Fiscal Year 2009: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2008: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Fiscal Year 2007: ¥28,470,000 (Direct Cost: ¥21,900,000、Indirect Cost: ¥6,570,000)
|
Keywords | ナノ材料 / 少数電子素子 / トンネル現象 / ナノ粒子 / 自己組織化 / π共役系 / 電子輸送特性 / 電子輪送特性 |
Research Abstract |
When the small Au nanoparticles are used as single-electron islands for single-electron devices operated at room temperature, the tunneling resistance of organic ligands should be low as well as the quantum resistance. We developed a facile method to control the size of Au nanopaticles even by using hexanethiol with the tunneling resistance of~MΩ. For further reduction of the tunneling resistance, various macrocyclic π-conjugated ligands were adsorbed on the Au nanoparticles in a face-coordination fashion. Very interestingly, we found quite unique optical properties as well as drastic reduction of the tunneling resistance due to the electronic interaction beween the π-orbitals and Au orbitals. We also succeeded in the large-scale synthesis of Au_<25> clusters. On the other hand, small Au nanoparticles were found to exhibit single-electron transport property and Coulomb blockade at room temperature.
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Report
(4 results)
Research Products
(75 results)
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[Journal Article]2009
Author(s)
寺西利治
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Journal Title
金ナノテクノロジー:その基礎と応用((株)シーエムシー出版)
Pages: 260-272
Related Report
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[Journal Article]2009
Author(s)
寺西利治
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Journal Title
配位空間の化学-最新技術と応用-((株)シーエムシー出版)
Pages: 329-336
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