465228 High-Fidelity Single Column Separation of Semiconducting Swcnts Using Agarose Gel

Monday, November 14, 2016
Grand Ballroom B (Hilton San Francisco Union Square)
Yang Zhao1, Justin G. Clar1, Jia Xu2, Jean-Claude J. Bonzongo3 and Kirk J. Ziegler4, (1)Chemical Engineering, University of Florida, Gainesville, FL, (2)Department of Materials Science and Engineering, University of Florida, Gainesville, FL, (3)Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL, (4)Department of Chemical Engineering, University of Florida, Gainesville, FL

The synthesis of single-wall carbon nanotubes (SWCNTs) yields a complex mixture of species with different properties defined by their (n,m) type. The coexistence of SWCNTs with varied bandgaps hinders their application, especially in high performance electronic devices. Over the past decade, the post-synthetic separation of single wall carbon nanotubes (SWCNTs) has been studied with great interest. While high-fidelity separations of semiconducting (s-) SWCNTs by their (n,m) type have been demonstrated, a simple, high-throughput method is still desired. Here we report the selective desorption of a wide range of single-chirality (n,m) fractions in a single column packed with agarose gel. High-purity fractions of (n,m) nanotubes are obtained with high yield once a specific ratio of sodium dodecyl sulfate (SDS)/sodium deoxycholate (DOC) co-surfactant solution is used. The differences between the co-surfactant ratios needed to separate two (n,m) species can sometime be very small. The separation can be obtained under a wide variety of co-surfactant background concentrations. However, better separations are achieved at higher background concentrations.

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See more of this Session: Poster Session: Nanoscale Science and Engineering
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