Micropatterning of Confined Surfaces with Polymer Brushes by Two‐Photon‐Initiated Reversible Addition–Fragmentation Chain‐Transfer Polymerization
Photopatterned polymer brushes provide a viable option to alter the surface properties of biosensors, substrates for tissue engineering, or microelectronic implants. Although the one-photon direct laser writing enables excellent control over pattern geometry, it has an inherently limited writing resolution caused by the used light source; moreover, no patterning of undercuts or channels is possible. This article describes the preparation of patterned polymer brushes on confined glass substrates using two-photon-initiated reversible addition-fragmentation chain-transfer (2PRAFT) polymerization of <i>N</i>-acryloylmorpholine as a hydrophilic model monomer. The polymer brushes prepared by 2PRAFT exhibit a height of 10 nm, as confirmed by atomic force microscopy. In addition, well-defined printed structures down to 5 μm size are prepared, which outperforms the currently achieved resolution of polymer brushes prepared by one-photon direct laser writing.
Authors
- Tommaso Zandrini (ORCID: https://orcid.org/0000-0003-3851-4675)
- Manuel Rufin (ORCID: https://orcid.org/0000-0003-0322-0095)
- Philipp J. Thurner (ORCID: https://orcid.org/0000-0001-7588-9041)
- Andreas Rohatschek (ORCID: https://orcid.org/0000-0003-2214-4331)
- Robert Liska (ORCID: https://orcid.org/0000-0001-7865-1936)
- S. Helfert (ORCID: https://orcid.org/0000-0003-3121-336X)
- Orestis G. Andriotis (ORCID: https://orcid.org/0000-0003-4107-1510)
- Anna Zahoranová (ORCID: https://orcid.org/0000-0002-7219-1120)
- Peter Machata (ORCID: https://orcid.org/0000-0002-6577-7238)
- Stefan Baudis (ORCID: https://orcid.org/0000-0002-5390-0761)
- Aleksandr Ovsianikov (ORCID: https://orcid.org/0000-0001-5846-0198)
Institutions
- TU Wien (AT)
- Slovak Academy of Sciences (SK)
- Polymer Institute of the Slovak Academy of Sciences (SK)
- Christian Doppler Laboratory for Thermoelectricity (AT)
- Austrian Cluster for Tissue Regeneration (AT)
Publication Details
- Journal
- Small Science
- Published
- 2024-11-21
- DOI
- https://doi.org/10.1002/smsc.202400263
- Citations
- 1
- Primary Topic
- Polymer Surface Interaction Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.18
Funders
- Österreichische Nationalstiftung für Forschung, Technologie und Entwicklung
- Vienna Science and Technology Fund
- Österreichischen Akademie der Wissenschaften
- Austrian Science Fund
- Technische Universität Wien
- Christian Doppler Forschungsgesellschaft
- Vedecká Grantová Agentúra MŠVVaŠ SR a SAV
- Bundesministerium für Digitalisierung und Wirtschaftsstandort
- Technische Universität Wien Bibliothek