Raman spectra of graphite oxide and functionalized graphene sheets

Citation:

Kudin, K. N. ; Ozbas, B. ; Schniepp, H. C. ; Prud'homme, R. K. ; Aksay, I. A. ; Car, R. Raman spectra of graphite oxide and functionalized graphene sheets. Nano Letters 2008, 8 36-41.

Date Published:

Jan

Type of Article:

Article

ISBN Number:

1530-6984

Accession Number:

WOS:000252257700007

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 sp(2) 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 sp(3) carbons on the edges of a zigzag carbon ribbon.