4.7 Article

Non-spherical Janus microgels driven by thiolated DNA interactions

Journal

POLYMER
Volume 55, Issue 10, Pages 2340-2346

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2014.03.043

Keywords

Janus microgels; DNA interactions; Non-spherical particles

Funding

  1. Natural Sciences and Engineering Research Council of Canada (NSERC)
  2. Canada Foundation for Innovation (CFI)
  3. Alberta Advanced Education & Technology Small Equipment Grants Program (AET/SEGP)
  4. National Natural Science Foundation of China [51373183, 21074139, 91127029]
  5. 973 Program [2013CB933004, 2009CB930404, 2011CB932303, 2011CB808400]
  6. China Scholarship Council (CSC)
  7. University of Alberta (the Department of Chemistry)
  8. University of Alberta (the Faculty of Science)

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Janus poly (N-isopropylacrylamide)-co-acrylic acid/Au microgels that resemble a snowman, dumbbell, and an abalone were prepared by thermally evaporating a layer of Au on half of the microgel surface, followed by exposure to thiolated single-stranded DNA with complementary sequences. We hypothesize that when the complementary single-stranded DNA attached to the Au forms the more stable double strand, the Au reorganizes on the microgel surface, yielding the observed unique Janus particle structures. (C) 2014 Elsevier Ltd. All rights reserved.

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