• 文献标题:   Theoretical study of the interactions of a graphene-on-Ni(111) composite with dopamine
  • 文献类型:   Article
  • 作  者:   YANG JW, YUAN YH, ZHAO H
  • 作者关键词:   density functional theory, interaction, nanomaterial
  • 出版物名称:   MOLECULAR PHYSICS
  • ISSN:   0026-8976 EI 1362-3028
  • 通讯作者地址:   Shanghai Dianji Univ
  • 被引频次:   1
  • DOI:   10.1080/00268976.2015.1123314
  • 出版年:   2016

▎ 摘  要

The physics underlying the interactions between nanomaterials and biomolecules is largely unexplored. In this study, we modelled the interactions of a graphene-on-Ni(111) nanocomposite with dopamine, an important biomolecule with crucial physiological functions in the human brain and body, using density functional theory methods. Stable adsorption of the dopamine molecule was observed on the surface of the graphene-on-Ni(111) composite. The adsorption mechanism was revealed to involve both charge and pi-pi interactions between the dopamine and graphene when they are in close proximity. Simulated scanning tunnelling microscopy images of dopamine on the surface of the graphene-on-Ni(111) composite, as an application of this nanomaterial, could distinguish one side of the G2 conformation of dopamine from the other conformations as a result of their interactions. Therefore, the graphene-on-Ni(111) composite is expected to have potential as a nanomaterial for detecting single biomolecules. The findings of this study will provide a significant contribution to the fields of nanomaterials and biotechnology, including the development of highly accurate biodevices and biosensors.