2017年10月
Orientation and Electronic Structures of Multilayered Graphene Nanoribbons Produced by Two-Zone Chemical Vapor Deposition
LANGMUIR
- ,
- ,
- ,
- ,
- ,
- ,
- ,
- 巻
- 33
- 号
- 40
- 開始ページ
- 10439
- 終了ページ
- 10445
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/acs.langmuir.7b01862
- 出版者・発行元
- AMER CHEMICAL SOC
The orientation and electronic structure of multilayered graphene nanoribbons with an armchair-edge (AGNRs) were determined by low-temperature scanning tunneling microscopy in this study. The orientation of AGNRs was found to be an edge-on structure when positioned as a top layer, while previous reports showed a face-on structure for monolayered AGNRs on Au(111). According to density functional theory calculations, AGNRs in a top layer preferentially form as edge-on structures rather than face-on structures due to the balance of CH-pi and pi-pi interactions between AGNRs. Scanning tunneling spectroscopy and density functional theory calculations revealed that the electronic structures of multilayered AGNRs are similar to those in a gas-phase due to the lack of interaction between AGNRs and the Au(111) substrate. The observation of AGNRs in mutilayers might suggest the conformation-assisted mechanism of dehydrogenation when there is no contact with the Au(111) substrate.
- リンク情報
- ID情報
-
- DOI : 10.1021/acs.langmuir.7b01862
- ISSN : 0743-7463
- Web of Science ID : WOS:000412966100003