2011 Fiscal Year Final Research Report
Development of a simple method for the separation of metallic and semiconducting carbon nanotubes
| Project/Area Number |
21350110
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Organic industrial materials
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Keywords | カーボンナノチューブ / カイラリティ / 分子認識 / 分離 / 物理吸着 / フルオレンコポリマー / 分子間相互作用 |
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| Research Abstract |
Due to the difficulty in the synthesis of SWNTs with a specific chirality, SWNT chirality sorting has been an anticipated technique for realizing practical applications of SWNTs especially in the field of nanoelectronic devices. We presented a novel strategy for SWNT chirality sorting ; that is, a method using" nanometal sinkers" that adsorb on specific SWNTs, resulting in the separation of nanometal sinkeradsorbed SWNTs and other SWNTs by DGU. We reported that certain chiral polyfluorene copolymers can well recognize SWNT with certain chirality preferentially, leading to solubilization of specific chiral SWNTs. The chiral copolymers were prepared by the Niーcatalysed Yamamotocoupling reaction of 2, 7dibromo9, 9dindecylfluoreneand 2, 7dibromo9, 9bis[(S)(+) 2methylbutyl] fluorene comonomers. The selectivity of the SWNT chirality was mainly determined by the relative fraction of the achiral and chiral side groups.
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