Work

Characterizing Covalently Sidewall-Functionalized Single-Walled Carbon Nanotubes by Using1H NMR Spectroscopy

Year: 2013

Type: article

Abstract: Unambiguous evidence for covalent sidewall functionalization of single-walled carbon nanotubes (SWCNTs) has been a difficult task, especially for nanomaterials in which slight differences in functionality structure produce significant changes in molecular characteristics. Nuclear magnetic resonance (NMR) spectroscopy provides clear information about the structural skeleton of molecules attached to SWCNTs. To establish the generality of proton NMR as an analytical technique for characterizing covalently functionalized SWCNTs, we have obtained and analyzed proton NMR data of SWCNT–substituted benzenes across a variety of para substituents. Trends obtained for differences in proton NMR chemical shifts and the impact of o -, p -, and m -directing effects of electrophilic aromatic substituents on phenyl groups covalently bonded to SWCNTs are discussed.

Source: The Journal of Physical Chemistry C

DOI: 10.1021/jp402307k

Authors: Donna J. Nelson, Ravi Kumar

Institution: University of Oklahoma

Language: English

Topic: Carbon Nanotubes in Composites

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: National Institutes of Health, National Institute of General Medical Sciences

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