Chemical functionalization of graphene with aromatic molecule

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Author(s)

Detail(s)

Original languageEnglish
Title of host publicationIEEE-NANO 2015 - 15th International Conference on Nanotechnology
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1324-1327
ISBN (Print)9781467381550
Publication statusPublished - Jul 2015

Conference

Title15th IEEE International Conference on Nanotechnology, IEEE-NANO 2015
LocationAngelicum Congress Centre
PlaceItaly
CityRome
Period27 - 30 July 2015

Abstract

We investigated the doping effects of chemical functionalization on graphene field-effect transistors (G-FETs). A pyrene backbone with an electron-withdrawing group (1-pyrenebutanoic acid succinimidyl ester, PBASE) and DMF acting as a solvent were used. The pyrene derivative was stably immobilized onto the graphene surface via π-π stacking between the two highly conjugated systems, confirmed by electric measurements with different incubation times and linker molecule concentrations. Dimethyl formamide (DMF) can decrease the conductivity of the FET devices and showed an n-doping effect while the pyrene derivative showed a p-doping effect. Because of this, the functionalization with PBASE in DMF could be regarded as a competitive process. This study provides a new insight into chemical functionalization with aromatic molecule, and understanding of doping effects about electron donor and electron acceptor on graphene during the functionalization process.

Research Area(s)

  • aromatic, chemical functionalization, graphene, π-π stacking

Citation Format(s)

Chemical functionalization of graphene with aromatic molecule. / Wu, Guangfu; Tang, Xin; Meyyappan, M.; Lai, King W. C.

IEEE-NANO 2015 - 15th International Conference on Nanotechnology. Institute of Electrical and Electronics Engineers Inc., 2015. p. 1324-1327 7388878.

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review