期刊
NANO LETTERS
卷 11, 期 10, 页码 4352-4356出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl2024678
关键词
Graphene; graphene nanoribbons; carbon nanotubes; SWNT; polycyclic aromatic hydrocarbons
类别
资金
- Angpanneforeningens Forskningstiftelse
- Academy of Finland [128445, 124283]
- TEKES [SIPI 211088, LIBACAM 211247]
- Finnish IT Center for Science
- Academy of Finland (AKA) [124283, 124283] Funding Source: Academy of Finland (AKA)
A novel material, graphene nanoribbons encapsulated in single-walled carbon nanotubes (GNR@SWNT), was synthesized using confined polymerization and fusion of polycyclic aromatic hydrocarbon (PAR) molecules. Formation of the GNR is possible due to confinement effects provided by the one-dimensional space inside nanotubes, which helps to align coronene or perylene molecules edge to edge to achieve dimerization and oligomerization of the molecules into long nanoribbons. Almost 100% filling of SWNT with GNR is achieved while nanoribbon length is limited only by the length of the encapsulating nanotube. The PAR fusion reaction provides a very simple and easily scalable method to synthesize GNR@SWNT in macroscopic amounts. First-principle simulations indicate that encapsulation of the GNRs is energetically favorable and that the electronic structure of the encapsulated GNRs is the same as for the free-standing ones, pointing to possible applications of the GNR@SWNT structures in photonics and nanoelectronics.
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