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Chemical defect generation and propagation on carbon nanotubes

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1 Author(s)
YuHuang Wang ; Dept. of Chem. & Biochem., Univ. of Maryland, College Park, MD, USA

Theoretical studies predict that the pattern of functional groups, or defects, will substantially affect the electrical and optical properties of low-dimensional systems such as single-walled carbon nanotubes (SWNTs) and graphene [1, 2]. Experimentally, it has been challenging to spatially control the defect generation and propagation on the graphene lattice. Recent experiments have demonstrated that diazonium chemistry and oxidative reactions occur on a SWNT sidewall at completely random atomic sites [3, 4]. The covalent modification of even a single site results in a substantial drop of electrical conductance[3] and stepwise quenching of exciton fluorescence in semiconducting nanotubes [4].

Published in:

Semiconductor Device Research Symposium (ISDRS), 2011 International

Date of Conference:

7-9 Dec. 2011