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Published on: July 22, 2013
Monosaccharide-Derived Enantioselectivity in SWCNT Chemoresistive VOC Sensing
Ariel Shitrit1, Yonatan Sukhran1, Nina Tverdokhleb2
1Institute of Chemistry and Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Safra Campus, Givat Ram, Jerusalem, 9190401, Israel.
None:
Semiconducting single-walled carbon nanotubes (sc-SWCNTs) are of great potential for vapor sensing. However, sc-SWCNTs lack recognition features for discriminating between sparsely functionalized moieties, molecules with similar structural features, and enantiomer pairs. This becomes a major setback in discriminating between volatile organic compounds (VOCs). Here, we used two galactosides decorated with aromatic groups as a recognition layer in chemoresistive sc-SWCNT sensors to produce chiral preference toward six terpenoid enantiomers. The multichirality and multifunctionality of a monosaccharide scaffold were exploited to maximize the limited interacting features associated with VOCs. The developed system establishes a robust and tunable platform for enantioselective gas sensing.
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