371160 Purification of DNA-Wrapped Carbon Nanotubes in Polymer Aqueous Two-Phase Systems

Tuesday, November 18, 2014
Galleria Exhibit Hall (Hilton Atlanta)
Geyou Ao and Ming Zheng, National Institute of Standards and Technology, Gaithersburg, MD

Specific short single-stranded DNA sequences have been identified to show recognition abilities for specific chiralities of SWCNTs from their synthetic mixture. In addition, polymer aqueous two-phase (ATP) extraction has been demonstrated recently as an efficient and robust method for the purification of SWCNTs dispersed by both surfactants and DNA. Specifically, DNA-SWCNT hybrids showed sequence-dependent partition in ATP systems, which enabled isolation of many small-diameter SWCNT species at high purity. In this work, we report a systematic study of designing DNA sequence patterns within 40-mers by mutation of previously identified recognition sequences for purifying specific species of SWCNTs with improved yield and purity.

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