Purine on graphene: PES and NEXAFS study of a heterocyclic aromatic organic compound

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• 作者：Ki-jeong Kim^a ; Yong Han^a ; ^b ; Junfa Zhu^b ; Jaeyoon Baik^b ; Hyunjun Shin^b ; Hangil Lee^c ; ^{easyscan@sookmyung.ac.kr" class="auth_mail" title="E-mail the corresponding author} ; Bongsoo Kim^a ; ^{kbs007@postech.ac.kr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Graphene ; Purine ; PES ; NEXAFS
• 刊名：Current Applied Physics
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：16
• 期：9
• 页码：1120-1123
• 全文大小：847 K

文摘

We have investigated the properties of a self-assembled purine (C₅H₄N₄) monolayer on epitaxial graphene (EG) on SiC by using high resolution X-ray photoemission spectroscopy (HRPES) and near-edge X-ray absorption of fine structure (NEXAFS). The monolayer of purine on graphene was prepared inside a UHV chamber. The spontaneously-assembled monolayer of purine molecules were oriented parallel to the surface of the monolayer graphene, and it reaches a charge equilibrium state on the monolayer graphene.