Controllable synthesis of graphene using novel aromatic   1,3,5-triethynylbenzene molecules on Rh(111)

doi:10.1039/c5ra12848j

CORC > 北京大学 > 工学院

	Controllable synthesis of graphene using novel aromatic 1,3,5-triethynylbenzene molecules on Rh(111)
	Qi, Yue ; Zhou, Xiebo ; Liu, Mengxi ; Li, Qiucheng ; Ma, Donglin ; Zhang, Yanfeng ; Liu, Zhongfan
刊名	RSC ADVANCES
	2015
关键词	SCANNING-TUNNELING-MICROSCOPY CHEMICAL-VAPOR-DEPOSITION HEXAGONAL BORON-NITRIDE EPITAXIAL GRAPHENE LARGE-AREA TERMINAL ALKYNES HIGH-QUALITY TG-MS GROWTH FILMS
DOI	10.1039/c5ra12848j
英文摘要	Selecting distinctive carbon precursors can mediate graphene synthesis towards versatile targets, for example, using C-60 to produce graphene quantum dots or hexabromobenzene to achieve graphene at rather low temperature. Herein, 1,3,5-triethynylbenzene (TEB) is selected for the first time as the carbon precursor for graphene synthesis on Rh(111). Considering the characteristic pi-d orbital hybridization between TEB and Rh(111), room-temperature adsorption followed by a temperature-programmed annealing or direct annealing to target growth temperature under ultrahigh vacuum conditions is designed to be the two synthesis pathways. In the former growth pathway, the benzene ring of the TEB unit is expected to be maintained throughout the whole annealing process, leading to a high yield of graphene at relatively low temperature as compared with existing synthesis via gaseous precursors. Several-molecule oligomers and graphene nanoclusters are detected to be the crucial intermediates through stepwise annealing (150 degrees C and 430 degrees C), as evidenced by scanning tunneling microscopy (STM) characterizations. Interestingly, graphene synthesized via the latter pathway usually possesses fewer domain boundaries and defects than the former one, probably due to sufficient diffusion and rearrangement of carbon precursors. Briefly, this work should contribute greatly to understanding the growth intermediates and the synthesis of high-quality graphene using large aromatic precursor molecules.; National Natural Science Foundation of China [51222201, 51290272, 51472008, 51432002]; Ministry of Science and Technology of China [2012CB921404, 2013CB932603, 2012CB933404, 2011CB921903]; Foundation for Innovative Research Groups of the National Natural Science Foundation of China [51121091]; SCI(E); EI; ARTICLE; yanfengzhang@pku.edu.cn; zfliu@pku.edu.cn; 93; 76620-76625; 5
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/421055]
专题	工学院
推荐引用方式 GB/T 7714	Qi, Yue,Zhou, Xiebo,Liu, Mengxi,et al. Controllable synthesis of graphene using novel aromatic 1,3,5-triethynylbenzene molecules on Rh(111)[J]. RSC ADVANCES,2015.
APA	Qi, Yue.,Zhou, Xiebo.,Liu, Mengxi.,Li, Qiucheng.,Ma, Donglin.,...&Liu, Zhongfan.(2015).Controllable synthesis of graphene using novel aromatic 1,3,5-triethynylbenzene molecules on Rh(111).RSC ADVANCES.
MLA	Qi, Yue,et al."Controllable synthesis of graphene using novel aromatic 1,3,5-triethynylbenzene molecules on Rh(111)".RSC ADVANCES (2015).