Abstract
The construction of nano-sized, two-dimensionally ordered nanoparticle (NP) superstructures is important for various advanced applications such as photonics, sensing, catalysis, or nano-circuitry. Currently, such structures are fabricated using the templated organization approach, in which the templates are mainly created by photo-lithography or laser-lithography and other invasive top-down etching procedures. In this work, we present an alternative bottom-up preparation method for the controlled deposition of NPs into hierarchical structures. Lamellar polystyrene-block-poly(2-vinylpyridinium) thin films featuring alternating stripes of neutral PS and positively charged P2VP domains serve as templates, allowing for the selective adsorption of negatively charged gold NPs. Dense NP assembly is achieved by a simple immersion process, whereas two-dimensionally ordered arrays of NPs are realized by microcontact printing (μCP), utilizing periodic polydimethylsiloxane wrinkle grooves loaded with gold NPs. This approach enables the facile construction of hierarchical NP arrays with variable geometries.
| Original language | American English |
|---|---|
| Pages (from-to) | 623-628 |
| Number of pages | 6 |
| Journal | Polymers for Advanced Technologies |
| Volume | 28 |
| Issue number | 5 |
| DOIs | |
| State | Published - May 2017 |
Bibliographical note
Funding Information:Special thanks are granted to Dr Khosrow Rahimi for measuring samples at the Jülich Synchrotron Radiation Laboratory (Germany). T.W. acknowledges the Fonds National de la Recherche Luxembourg (FNR) for funding (Grant Nr.: 3983022). SEM measurement time was provided by the Center for Chemical Polymer Technology, which is supported by the EU and the federal state of North Rhine-Westphalia (grant no. EFRE 30 00 883 02).
Publisher Copyright:
Copyright © 2016 John Wiley & Sons, Ltd.
Keywords
- block copolymers
- electrostatic assembly
- gold nanoparticles
- microcontact printing