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Ultraviolet Deactivation of Silane-Functionalized Surfaces : A Scalable Approach for Patterned Nanoparticle Assembly

Ultraviolet Deactivation of Silane-Functionalized Surfaces : A Scalable Approach for Patterned Nanoparticle Assembly

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SNEGIR, Sergii, Thomas HUHN, Johannes BONEBERG, Simon HAUS, Olivier PLUCHERY, Elke SCHEER, 2020. Ultraviolet Deactivation of Silane-Functionalized Surfaces : A Scalable Approach for Patterned Nanoparticle Assembly. In: The Journal of Physical Chemistry C. American Chemical Society (ACS). 124(35), pp. 19259-19266. ISSN 1932-7447. eISSN 1932-7455. Available under: doi: 10.1021/acs.jpcc.0c05671

@article{Snegir2020-08-25Ultra-50692, title={Ultraviolet Deactivation of Silane-Functionalized Surfaces : A Scalable Approach for Patterned Nanoparticle Assembly}, year={2020}, doi={10.1021/acs.jpcc.0c05671}, number={35}, volume={124}, issn={1932-7447}, journal={The Journal of Physical Chemistry C}, pages={19259--19266}, author={Snegir, Sergii and Huhn, Thomas and Boneberg, Johannes and Haus, Simon and Pluchery, Olivier and Scheer, Elke} }

Haus, Simon Huhn, Thomas Boneberg, Johannes 2020-09-04T08:52:46Z Huhn, Thomas Snegir, Sergii Ultraviolet Deactivation of Silane-Functionalized Surfaces : A Scalable Approach for Patterned Nanoparticle Assembly Pluchery, Olivier Snegir, Sergii Scheer, Elke eng terms-of-use Pluchery, Olivier 2020-08-25 Boneberg, Johannes Scheer, Elke Haus, Simon Developing optoelectronic devices, biological or chemical sensors, displays, and other devices based on nanoparticles (NPs) requires designing tailored NP assemblies on solid substrates, and often with a given surface positioning. In our study, we discuss a new soft-lithographic method for patterning an organic layer, which is capable of binding gold nanoparticles (AuNPs) to the surface. AuNPs with a citrate shell were 17 nm in diameter and prepared by the Turkevich protocol. Our method is based on controlling the binding capability of (3-aminopropyl)trimethoxysilane (APTES)-coated surface by deactivating the −NH<sub>2</sub> terminal groups of APTES under the action of UV-generated ozone in air. We show that partial and complete deactivation can be achieved depending on the atmosphere and exposure time. Using a shadow mask during irradiation, we furthermore show that our method can be applied for creating micron-scale arrays of NPs on APTES-coated substrates with a spatial resolution down to ∼1.5 μm, currently limited by the properties of the mask. 2020-09-04T08:52:46Z

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