Journal
LANGMUIR
Volume 27, Issue 14, Pages 9005-9011Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la201841m
Keywords
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Funding
- Charyk Foundation
- Fletcher Jones Foundation [9900600]
- Office of Naval Research [N00014-11-1-0031]
- Fulbright Scholarship
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Among diverse types of synthetic materials, arrays of vertically aligned carbon nanotubes have attracted the most attention, mainly because of their exceptional mechanical, electrical, optical, and thermal properties. However, their wetting properties are yet to be understood. In this present study, oxygenated surface functional groups have been identified as a vital factor in controlling the wetting properties of carbon nanotube arrays. The results presented herein indeed show that a combination of ultraviolet/ozone and vacuum pyrolysis treatments can be used to vary the surface concentration of these functional groups such that the carbon nanotube array can be repeatedly switched between hydrophilic and hydrophobic.
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