Tunable fabrication of hierarchical hybrids via the incorporation of poly(dopamine) functional interlayer

Tunable fabrication of hierarchical hybrids via the incorporation of poly(dopamine) functional... Article history: Two kinds of ternary hybrids were prepared by anchoring different shapes and loadings of Au nanopar- Received 27 November 2015 ticles (NPs) on poly(dopamine) (PDA) functionalized polystyrene (PS) microspheres with two different Received in revised form 13 January 2016 strategies, i.e., in situ reduction and self-assembly approach. PDA coatings were firstly introduced to Accepted 1 February 2016 functionalize the hydrophobic PS surface with sufficient amino and hydroxyl groups, which enhanced Available online 3 February 2016 the interaction between Au NPs and the polymer spheres. Thus, Au NPs could be easily immobilized onto the surface of the PDA/PS microspheres, and the hierarchical composite microspheres exhibited Keywords: a well-defined core/shell structure without sacrificing the spherical PS morphology. PS/PDA/Au-R and Au nanoparticles PS/PDA/Au-A microspheres fabricated by in situ reduction and self-assembly approach showed different Polydopamine distinct Au nano-shell morphology with the corresponding optical, catalytic and electrochemical proper- Core–shell conducting spheres ties. Field emission scanning electron microscopy and transmission electronic microscopy verified these Polymer microsphere hierarchical structures with the ultrathin PDA film incorporating between the inner PS core and the outer Au NPs shell. X-ray diffraction and X-ray photoelectron spectroscopy confirmed the presence of PDA and Au layer on the surface http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Tunable fabrication of hierarchical hybrids via the incorporation of poly(dopamine) functional interlayer

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Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2016.02.005
Publisher site
See Article on Publisher Site

Abstract

Article history: Two kinds of ternary hybrids were prepared by anchoring different shapes and loadings of Au nanopar- Received 27 November 2015 ticles (NPs) on poly(dopamine) (PDA) functionalized polystyrene (PS) microspheres with two different Received in revised form 13 January 2016 strategies, i.e., in situ reduction and self-assembly approach. PDA coatings were firstly introduced to Accepted 1 February 2016 functionalize the hydrophobic PS surface with sufficient amino and hydroxyl groups, which enhanced Available online 3 February 2016 the interaction between Au NPs and the polymer spheres. Thus, Au NPs could be easily immobilized onto the surface of the PDA/PS microspheres, and the hierarchical composite microspheres exhibited Keywords: a well-defined core/shell structure without sacrificing the spherical PS morphology. PS/PDA/Au-R and Au nanoparticles PS/PDA/Au-A microspheres fabricated by in situ reduction and self-assembly approach showed different Polydopamine distinct Au nano-shell morphology with the corresponding optical, catalytic and electrochemical proper- Core–shell conducting spheres ties. Field emission scanning electron microscopy and transmission electronic microscopy verified these Polymer microsphere hierarchical structures with the ultrathin PDA film incorporating between the inner PS core and the outer Au NPs shell. X-ray diffraction and X-ray photoelectron spectroscopy confirmed the presence of PDA and Au layer on the surface

Journal

Applied Surface ScienceElsevier

Published: Apr 30, 2016

References

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