Effect of substrates on covalent surface modification of graphene using   photosensitive functional group

doi:10.3139/146.111163

CORC > 北京大学 > 化学与分子工程学院

	Effect of substrates on covalent surface modification of graphene using photosensitive functional group
	Saini, Deepshikha
刊名	international journal of materials research
	2015
关键词	Graphene Photosensitive azobenzene Covalent modification Octadecyltrichlorosilane Raman spectroscopy SELF-ASSEMBLED MONOLAYERS SCANNING-TUNNELING-MICROSCOPY EPITAXIAL GRAPHENE SUSPENDED GRAPHENE RAMAN-SPECTROSCOPY BORON-NITRIDE TRANSPORT OCTADECYLTRICHLOROSILANE TRANSISTORS DEFECTS
DOI	10.3139/146.111163
英文摘要	Graphene has gained much significance for its potential applications in optics and electronics owing to its unique physical and chemical properties. Nevertheless, its gapless band structure greatly limits its wider application in opto-electronic devices. The present study seeks to explore chemical functionalization as an effective method to tune the properties of graphene. Covalent modification of graphene.by aryl diazonium salt of a photosensitive functional group (azobenzene) has been used to achieve this goal. This is based on the fact that graphene is a two-dimensional, atomically thin lattice of sp(2)-bonded carbon atoms, therefore, its properties can be modulated by modifying the underlying dielectric surface with a self-assembled monolayer resulting in doping control. In the study, a clear difference in the rate of electron-transfer reactions with the photosensitive functional group is shown for monolayer graphene supported on SiO2/Si substrates and organic molecule functionalized SiO2/Si substrates. Graphene supported on SiO2/Si is more reactive towards functionalization than graphene on organic molecule functionalized surfaces, as shown by Raman spectroscopy. The transport characteristics of functionalized graphene on conventional SiO2/Si substrates as well as substrates modified with organic molecule octadecyltrichlorosilane self-assembled monolayers are also explored and compared.; Metallurgy & Metallurgical Engineering; SCI(E); EI; 0; ARTICLE; deepshikhasaini80@gmail.com; 2; 176-183; 106
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/312650]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Saini, Deepshikha. Effect of substrates on covalent surface modification of graphene using photosensitive functional group[J]. international journal of materials research,2015.
APA	Saini, Deepshikha.(2015).Effect of substrates on covalent surface modification of graphene using photosensitive functional group.international journal of materials research.
MLA	Saini, Deepshikha."Effect of substrates on covalent surface modification of graphene using photosensitive functional group".international journal of materials research (2015).