2015 Fiscal Year Final Research Report
Electronic states of chemically-doped single-walled carbon nanotubes and trio state regulation
| Project/Area Number |
26620069
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Functional solid state chemistry
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | 単層カーボンナノチューブ / フォトルミネッセンス / ネルンスト解析 / ドープナノチューブ / その場分光電気化学 / 酸化還元電位 / フェルミ準位 / ナノチューブカイラリティ |
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| Outline of Final Research Achievements |
Localized modification of single-walled carbon nanotubes (SWNTs) with aryl functional groups (Ar doping), providing the optical property-enhanced SWNTs with unique dependence on the substituent groups. In this study, we examined the electronic states of the Ar-doped SWNTs and the substituent effect of aryl functionalization through the in situ PL spectroelectrochemical method that we developed previously. We evaluated energy levels of the pristine and the Ar-doped SWNTs modified with three different substituents, in which the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) of the Ar-doped SWNTs were found to shift to negative and positive values, respectively, compared to those of the pristine SWNTs. Interestingly, we clarified that the HOMO of the Ar-doped SWNTs showed dependence of the chemical structure of the aryl substituent groups. We revealed a possible mechanism for the energy level shifting on the Ar-doping.
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| Free Research Field |
ナノカーボン化学
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