Control of electronic excitation induced by localized surface plasmon resonance
| Project/Area Number |
26248001
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | Hokkaido University |
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Principal Investigator |
Kei Murakoshi 北海道大学, 理学研究院, 教授 (40241301)
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| Co-Investigator(Kenkyū-buntansha) |
保田 諭 北海道大学, 理学(系)研究科(研究院), 准教授 (90400639)
南本 大穂 北海道大学, 理学(系)研究科(研究院), 助教 (80757279)
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| Co-Investigator(Renkei-kenkyūsha) |
IKEDA Katsuyoshi 北海道大学, 大学院理学研究院, 准教授 (50321899)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥42,900,000 (Direct Cost: ¥33,000,000、Indirect Cost: ¥9,900,000)
Fiscal Year 2016: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2015: ¥13,780,000 (Direct Cost: ¥10,600,000、Indirect Cost: ¥3,180,000)
Fiscal Year 2014: ¥23,010,000 (Direct Cost: ¥17,700,000、Indirect Cost: ¥5,310,000)
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| Keywords | 電気化学 / 局在表面プラズモン / 表面物理化学 / 半導体量子ドット / カーボンナノチューブ / グラフェン / 強結合 / 局在プラズモン / 電子励起選択則 / 半導体ナノドット / 表面増強ラマン散乱分光 / 二次元量子化物質 / 光電変換 / プラズモン誘起電荷移動 / 電子遷移選択則 / 表面増強ラマン散乱計測 / プラズモン増強電場 / 金属ナノ構造 / 表面増強ラマン散乱 / 色素分子 |
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| Outline of Final Research Achievements |
We have revealed that strong coupling states between localized surface plasmons and molecule excitons affect the Raman enhancement. Tuning of the localized surface plasmon resonance energy by changing metal nano-dimer structures leads to the modulation of the hybridized polariton energy of the hybridized system between metal nano-dimer structures and organic dye molecules. Maximum Raman enhancement was obtained at an optimized resonant energy between the hybrid states and Raman excitation. The coupling strength can be controlled by not only the structure of metal nano-dimer, but also the electrochemical potential of the system. The density of free electrons in metal nanostructures as well as the redox states of molecules can be varied by the electrochemical potential of the systems, resulting in the changes of the strong coupling states. The present finding can be extended into general scheme of the control for the light-matter interaction.
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Report
(4 results)
Research Products
(186 results)
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[Journal Article] Expandability of ultralong C-C bond : Largely different C_1-C_2 bond length determined by low-temperature X-ray structural analyses on pseudopolymorphs of 1,1-Bis(4-fluorophenyl)-2,2-bis(4-methoxyp henyl)pyracene2014
Author(s)
Takanori Suzuki, Yasuto Uchimura, Takashi Takeda, Hidetoshi Kawai, Ryo Katoono, Kenshu Fujiwara, Kei Murakoshi, Takanori Fukushima, Aiichiro Nagaki, Junichi Yoshida
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Journal Title
Chemistry Letters
Volume: 43
Issue: 1
Pages: 86-88
DOI
NAID
Related Report
Peer Reviewed / Open Access
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[Presentation] 局在光電場における分子応答2017
Author(s)
村越 敬
Organizer
平成28年度「分子システム研究」研究報告会
Place of Presentation
理化学研究所（埼玉県和光市）
Year and Date
2017-02-07
Related Report
Invited
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[Presentation] Auナノ二量体間隙の精密制御2016
Author(s)
及川隼平, 大貫温順, 木村夏実, 南本大穂, 村越 敬
Organizer
日本化学会 第96春季年会
Place of Presentation
同志社大学(京都府・京田辺市)
Year and Date
2016-03-26
Related Report
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