Jonas Schubert

Jonas Schubert
Leibniz Institute of Polymer Research Dresden | ipfdd · Department of Nanostructured Materials

Dr. rer. nat.
www.dermapurge.com

About

20
Publications
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312
Citations

Publications

Publications (20)
Article
Plasmonic nanoparticles that can be manipulated with magnetic fields are of interest for advanced optical applications, diagnostics, imaging, and therapy. Alignment of gold nanorods yields strong polarization-dependent extinction, and use of magnetic fields is appealing because they act through space and can be quickly switched. In this work, catio...
Article
Stretching living cells with light is a key method to assess their mechanics. To estimate the heat, cells experience during this procedure, microgels are utilized to relate temperature changes – caused by optical stretchers – to hydrogel swelling.
Article
The splashing of liquid drops onto a solid surface is important for a wide range of applications, including combustion and spray coating. As the drop hits the solid surface, the liquid is ejected into a thin horizontal sheet expanding radially over the substrate. Above a critical impact velocity, the liquid sheet is forced to separate from the soli...
Article
Full-text available
Br‐NHC‐AuI‐Komplexe wurden als Ausgangspunkte für Kumada‐Polymerisationen zur Synthese von regioregulärem Poly(3‐hexylthiophen)‐NHC‐AuI verwendet. Nach Reduktion wurden P3HT‐NHC@Au NPs erhalten. Aufgrund der robusten und leitfähigen NHC‐Bindung zeigen die entsprechenden NPs nicht nur eine hervorragende thermische und Redoxstabilität, sondern auch e...
Article
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Due to their excellent stability and conductivity, N -heterocyclic carbenes (NHCs) have attracted great attention as versatile ligands for the functionalization of macroscopic gold surfaces. Recently, NHCs are explored as anchor groups to bind organic ligands to colloidal gold (i.e. gold nanoparticles, Au NPs), yet these efforts are confined to non...
Article
Bio-sourced nanoparticles have a range of desirable properties for therapeutic applications, including biodegradability and low immunogenicity. Glycogen, a natural polysaccharide nanoparticle, has garnered much interest as a component of advanced therapeutic materials. However, functionalizing glycogen for use as a therapeutic material typically in...
Article
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We demonstrate a novel colloidal self-assembly approach toward obtaining mechanically tunable, cost-efficient and low-loss plasmonic nanostructures that show pronounced optical anisotropy upon mechanical deformation. Soft lithography and template-assisted colloidal self-assembly are used to fabricate a stretchable periodic square lattice of gold na...
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For negatively charged proteins (and protein-coated nanoparticles), charge inversion can be induced through the addition of hydrolyzable metal ions. In this study, protein-coated Au nanoparticles were used to investigate the influence of pH and various metal ions on the charge reversal and colloidal stability, as the addition of metal ions (Lewis a...
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For many photonic applications, it is important to confine light of specific wavelength at a certain volume of interest at low losses. So far, it is only possible to use the polarized light perpendicular to the solid grid lines to excite waveguide plasmon polaritons in a waveguide supported hybrid structure. In our work, we use a plasmonic grating...
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In this study, we present a novel and highly facile method for the synthesis of multi-responsive plasmonic nanoparticles with an interesting interfacial behavior. We used thiol-initiated photopolymerization technique to graft poly(N-isopropylacrylamide) onto the surface of protein-coated gold nanoparticles. The combination of the protein bovine ser...
Article
Silver nanomaterials (AgNMs) are released into sewers and consequently find their way to sewage treatment plants (STPs). The AgNMs are transformed en route, mainly into silver sulfide (Ag2S), which is only sparingly soluble in water and therefore potentially less harmful than the original AgNMs. Here we investigated the toxicity and fate of differe...
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Within the last two decades, the field of nanomedicine has not developed as successfully as has widely been hoped for. The main reason for this is the immense complexity of the biological systems, including the physico-chemical properties of the biological fluids as well as the biochemistry and the physiology of living systems. The nanoparticles' p...
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Full-text available
Enzyme-catalyzed controlled radical polymerization represents a powerful approach for the polymerization of a wide variety of water-soluble monomers. However, in such an enzyme-based polymerization system, the macromolecular catalyst (i.e., enzyme) has to be separated from the polymer product. Here, we present a compelling approach for the separati...
Article
Full-text available
In this work we show that different enzymes, such as horseradish peroxidase, glucose oxidase, laccase and catalase, can be directly immobilized onto plasmonic gold nanoparticles (NPs) and superparamagnetic iron oxide NPs simply via unspecific physical adsorption, yielding catalytically active and colloidally stable NP systems. The enzyme coating on...
Article
When a nanomaterial enters a biological system, proteins adsorb onto the particle surface and alter the surface properties of nanoparticles, causing drastic changes in physicochemical properties such as hydrodynamic size, surface charge and aggregation state, thus giving a completely new and undefined physicochemical identity to the nanoparticles....

Projects

Project (1)
Project
Grating based resonant nano-structures have a fascinating characteristic of the wavelength selectivity that has lead to profound applications in the field of nanophotonics. The current goal lies in an easily achievable gate-way towards a larger area fabrication of these type of novel resonant structures. By the combination of top-down and bottom-up processes with altered materialistic features, these structures can behave from commonly desired applications as sensors and filters towards energy harvesting and so on.