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Inventi Impact - Nanotech & Bionic Engg

Articles

  • Inventi:enb/91/14
    NONCOVALENT ATTACHMENT OF PBS QUANTUM DOTS TO SINGLE- AND MULTIWALLED CARBON NANOTUBES
    Anirban Das, Eric Hall, Chien M Wai

    Attachment of PbS quantumdots (QD) to single-walled carbon nanotubes (SWNT) andmultiwalled carbon nanotubes(MWCNT) is described; wherein commercially obtained PbS-QD of size 2.7 nm, stabilized by oleic acid, are added to a suspension of singleormultiwalled carbon nanotubes (CNT) prefunctionalized noncovalently with 1,2-benzenedimethanethiol (1,2-BDMT) in ethanol. The aromatic part of 1,2-BDMTattaches to the CNT by ??-?? stacking interactions, noncovalently functionalizing the CNT.The thiol part of the 1,2-BDMTon the functionalizedCNTreplaces oleic acid on the surface of theQDfacilitating the noncovalent attachment of the QD to the CNT.The composites were characterized by TEM and FTIR spectroscopy. Quenching of NIR fluorescence of the PbS-QD on attachment to the carbon nanotubes (CNT) was observed, indicating FRET from the QD to the CNT.

    How to Cite this Article
    CC Compliant Citation: Anirban Das, Eric Hall, and Chien M. Wai, “Noncovalent Attachment of PbS Quantum Dots to Singleand Multiwalled Carbon Nanotubes,” Journal of Nanotechnology, vol. 2014, Article ID 285857, 7 pages, 2014. doi:10.1155/2014/285857. Copyright © 2014 Anirban Das et al. This article is distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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