Raman spectra of graphite oxide and functionalized graphene sheets

Konstantin N. Kudin, Bulent Ozbas, Hannes C. Schniepp, Robert Krafft Prud'homme, Ilhan A. Aksay, Roberto Car

Research output: Contribution to journalArticle

3155 Scopus citations

Abstract

We investigate Raman spectra of graphite oxide and functionalized graphene sheets with epoxy and hydroxyl groups and Stone-Wales and 5-8-5 defects by first-principles calculations to interpret our experimental results. Only the alternating pattern of single-double carbon bonds within the sp2 carbon ribbons provides a satisfactory explanation for the experimentally observed blue shift of the G band of the Raman spectra relative to graphite. To obtain these single-double bonds, it is necessary to have sp3 carbons on the edges of a zigzag carbon ribbon.

Original languageEnglish (US)
Pages (from-to)36-41
Number of pages6
JournalNano Letters
Volume8
Issue number1
DOIs
StatePublished - Jan 1 2008

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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