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    Separation of Nanoparticles in Aqueous Multiphase Systems through Centrifugation

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    Type
    Article
    Authors
    Akbulut, Ozge
    Mace, Charles R.
    Martinez, Ramses V.
    Kumar, Ashok A.
    Nie, Zhihong cc
    Patton, Matthew R.
    Whitesides, George M.
    Date
    2012-07-06
    Online Publication Date
    2012-07-06
    Print Publication Date
    2012-08-08
    Permanent link to this record
    http://hdl.handle.net/10754/599598
    
    Metadata
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    Abstract
    This paper demonstrates the use of aqueous multiphase systems (MuPSs) as media for rate-zonal centrifugation to separate nanoparticles of different shapes and sizes. The properties of MuPSs do not change with time or during centrifugation; this stability facilitates sample collection after separation. A three-phase system demonstrates the separation of the reaction products (nanorods, nanospheres, and large particles) of a synthesis of gold nanorods, and enriches the nanorods from 48 to 99% in less than ten minutes using a benchtop centrifuge. © 2012 American Chemical Society.
    Citation
    Akbulut O, Mace CR, Martinez RV, Kumar AA, Nie Z, et al. (2012) Separation of Nanoparticles in Aqueous Multiphase Systems through Centrifugation. Nano Lett 12: 4060–4064. Available: http://dx.doi.org/10.1021/nl301452x.
    Sponsors
    This work was supported by the Bill and Melinda Gates Foundation (award number OPP1016360) and by a subcontract from a Department of Energy award to Northwestern University (DE-SC0000989).This work was performed in part using the facilities of the Center for Nanoscale Systems (CNS), a member of the National Nanotechnology Infrastructure Network (NNIN), which is supported by the National Science Foundation under NSF (award number ECS-0335765). CNS is part of the Faculty of Arts and Sciences at Harvard University. O.A. thanks Professor Osman Bakr of KAUST for fruitful discussions. R.V.M. acknowledges funding by the FP7 People program under the project Marie Curie IOF-275148. A.A.K. acknowledges financial support from the Office of Naval Research through the NDSEG fellowship program. The authors thank Professor David Weitz and the Weitz group for the use of their rheometry facilities, and Ms. Felice Frankel for her valuable advice on photography.
    Publisher
    American Chemical Society (ACS)
    Journal
    Nano Letters
    DOI
    10.1021/nl301452x
    PubMed ID
    22668343
    ae974a485f413a2113503eed53cd6c53
    10.1021/nl301452x
    Scopus Count
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