We synthesize and explore polymer-grafted colloids and supercolloids.

Oct 2nd 2024: Marina wins Springer Poster Award at the 52nd Biennial Assembly of the German Colloid Society

Jul 16th 2024: Shayan defends his PhD work. Congrats!

Feb 06th 2024: Langmuir Journal Cover: https://pubs.acs.org/toc/langd5/40/5

Sep 08th 2023: Shayan wins Soft Matter Poster Prize at the 2023 Conference of the European Colloid and Interface Society (ECIS)

Sophie Jancke; Olga Kuharenko; Shayan Vazirieh Lenjani; Christian Roßner; Marina Sebastian

The interaction of nanoparticles with the environment is determined by their surface properties, and, therefore, chemical surface adaption is of utmost importance. Functionalization with synthetic polymer ligands in particular opens up vast possibilities to control the properties of inorganic nanoparticles and/or to endow them with additional functionalities. Within this context, we contribute to exploring the potential of polymer/inorganic nanohybrids for catalytic and sensing applications. Our research is driven by tailored macromolecular synthesis as well as in-depth nanomaterial characterization, which together lead to a better understanding of underlying structure-effect relationships. This provides the basis for the rational design of novel nanosensors and nanocatalysts.

• Liebig fellowship (Fonds der Chemischen Industrie)
• Tailored Hybrid Nanomaterials for Plasmon-Mediated Photocatalysis (DFG)
• Toward Point-of-Action Diagnostics: Consistent Colorimetric Biosensing with Plasmonic Nanoparticles (Exploration Grant - Boehringer Ingelheim Foundation)
• "Cluster tox" case study (Leibniz Research Alliance "Advanced Materials Safety") 

• Vazirieh Lenjani, S.; Li, C.-W..; Seckin, S.; König, T. A. F..; Merlitz, H.; Sommer, J.-U.; Rossner, C.*: "Kinetically Controlled Site-Specific Self-assembly of Hairy Colloids." Langmuir 2024, 40 (5), 2487. DOI: 0.1021/acs.langmuir.3c02207. (Journal Cover Article)
• Jancke, S.; Liu, C.; Wang, R.; Sarkar, S.; Besford, Q. A.; König, T. A. F.; Popp, J.; Cialla-May, D.; Rossner, C.*: "Turning on hotspots: Supracolloidal SERS probes made brilliant by an external activation mechanism." Nanoscale 2023, 15 (46), 18687; DOI: 10.1039/d3nr05121h.
• Rossner, C.*; König, T. A. F.*; Fery, A.*: "Hairy Plasmonic Nanoparticles." In: "Hairy Nanoparticles - From Synthesis to Applications." (Ed.: Lin, Z.; Liu, Y.) Wiley-VCH 2023, 351−374.
• Rizvi, M. H.; Wang, R.; Schubert, J.; Crumpler, W. D.; Rossner, C.; Oldenburg, A. L.; Fery, A.; Tracy, J. B.*: "Magnetic Alignment for Plasmonic Control of Gold Nanorods Coated with Iron Oxide Nanoparticles." Adv. Mater. 2022, 34 (40), 2203366; DOI: 10.1002/adma.202203366.
• Vazirieh Lenjani, S.; Mayer, M.; Wang, R.; Dong, Y.; Fery, A.; Sommer, J.-U.; Rossner, C.*: "Importance of Electrostatic Forces in Supracolloidal Self-Assembly of Polymer-Functionalized Gold Nanorods." J. Phys. Chem. C 2022, 126 (32), 14017-14025. DOI: 10.1021/acs.jpcc.2c04930.