| Project/Area Number |
25400332
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics I
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| Research Institution | Toyota Physical and Chemical Research Institute |
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Principal Investigator |
NAKAMURA ARAO 公益財団法人豊田理化学研究所, その他部局等, フェロー (50159068)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | カーボンナノチューブ / 金属ナノ粒子 / 光学応答 / フェムト秒ダイナミクス / 励起エネルギー移動 / 電荷移動 / 光起電力効果 / 光捕集 |
|---|
| Outline of Final Research Achievements |
By utilizing the hollow space within single-walled carbon nanotubes (SWNTs), we successfully synthesized quaterrylene molecules from perylene, and polythiophene from sexythiophene. In quaterrylene-encapsulated SWNTs, excitation energy transfer (EET) from quaterrylene to SWNT is observed, and the EET times are found to be 0.4-1.4 ps, depending on the tube diameter. In fluorene polymer-wrapped SWNTs, EET occurs from polymer to SWNTs as well as EET between wrapped SWNTs. The transfer time is comparable to those of molecule-encapsulated SWNTs.
In polythiophene-encapsulated SWNTs, photoconductive behavior can be observed under visible light illumination, indicating carrier generation by photoexcitation of polythiophene. The charge transfer time from polythiophene to SWNTs is as short as 1 ps. We have found that such ultrafast energy and charge transfer are characteristic of carbon nanotube-based hybrid systems where the distance between polymer/molecule and SWNT is less than 1 nm.
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