Explanipedia

Editorial Board Members’ Collection Series: Polymer Physics and Theory Open

Fahmi Zaïri, Matthias Ballauff, Ulrich Maschke, Rufina G. Alamo · 2024

This Special Issue showcases the research at the forefront of polymer science, focusing on phase separation in polymer mixtures, which bridges materials science and biology. It highlights significant biomedical advancements, such as how st…

Interaction of Linear Polyelectrolytes with Proteins: Role of Specific Charge–Charge Interaction and Ionic Strength Open

Julia Bukała, Prabhu Srinivas Yavvari, Jacek Walkowiak, Matthias Ballauff, Marie Weinhart · 2021

We present a thermodynamic study of the interaction of synthetic, linear polyelectrolytes with bovine serum albumin (BSA). All polyelectrolytes are based on poly(allyl glycidyl ether) which has been modified by polymer-analogous reaction w…

Powerful SAS techniques for <i>operando </i>analysis of battery materials Open

Eneli Härk, Ben Kent, Sebastian Risse, Rafael Müller, Matthias Ballauff , et al. · 2021

Recent transformations and expected growth in global energy storage and conversion systems demand developing materials [1].Such materials in demand should be a long lasting, effective, safe, environmentally friendly, cost-effective and rec…

Interaction of Proteins with a Planar Poly(acrylic acid) Brush: Analysis by Quartz Crystal Microbalance with Dissipation Monitoring (QCM-D) Open

Jacek Walkowiak, Michael Gradzielski, Stefan Zauscher, Matthias Ballauff · 2020

We describe the preparation of a poly(acrylic acid) (PAA) brush, polymerized by atom transfer radical polymerization (ATRP) of tert-butyl acrylate (tBA) and subsequent acid hydrolysis, on the flat gold surfaces of quartz-crystal microbalan…

Carbonaceous Materials Investigated by Small-Angle X-ray and Neutron Scattering Open

Eneli Härk, Matthias Ballauff · 2020

Carbonaceous nanomaterials have become important materials with widespread applications in battery systems and supercapacitors. The application of these materials requires precise knowledge of their nanostructure. In particular, the porosi…

Wechselwirkung von Polyelektrolyt‐Architekturen mit Proteinen und Biosystemen Open

Katharina Achazi, Rainer Haag, Matthias Ballauff, Jens Dernedde, Jayachandran N. Kizhakkedathu , et al. · 2020

Gegenionen, die die Ladungen von Polyelektrolyten wie DNA oder Heparin neutralisieren, können im Wasser dissoziieren und beeinflussen stark deren Wechselwirkung mit Biomolekülen, insbesondere mit Proteinen. In diesem Artikel geben wir eine…

Understanding the Interaction of Polyelectrolyte Architectures with Proteins and Biosystems Open

Katharina Achazi, Rainer Haag, Matthias Ballauff, Jens Dernedde, Jayachandran N. Kizhakkedathu , et al. · 2020

The counterions neutralizing the charges on polyelectrolytes such as DNA or heparin may dissociate in water and greatly influence the interaction of such polyelectrolytes with biomolecules, particularly proteins. In this Review we give an …

Enhanced Catalytic Activity of Gold@Polydopamine Nanoreactors with Multi-compartment Structure Under NIR Irradiation Open

Shilin Mei, Zdravko Kochovski, Rafael Roa, Sasa Gu, Xiaohui Xu , et al. · 2020

Photothermal conversion (PTC) nanostructures have great potential for applications in many fields, and therefore, they have attracted tremendous attention. However, the construction of a PTC nanoreactor with multi-compartment structure to …

Enhanced Catalytic Activity of Gold@Polydopamine Nanoreactors with Multi-compartment Structure Under NIR Irradiation Open

Shilin Mei, Zdravko Kochovski, Rafael Roa, Sasa Gu, Xiaohui Xu , et al. · 2019

Model-free analysis of small-angle scattering data of mesoporous and microporous carbons Open

Albrecht Petzold, Simone Mascotto, Eneli Härk, G. Goerigk, Matthias Ballauff · 2019

Structural and Transport Properties of Li/S Battery Electrolytes: Role of the Polysulfide Species Open

Chanbum Park, Arne Ronneburg, Sebastian Risse, Matthias Ballauff, Matej Kanduč , et al. · 2019

Lithium--sulfur (Li/S) batteries are regarded as one of the most promising energy storage devices beyond lithium-ion batteries because of their high energy density of 2600 Wh/kg and an affordable cost of sulfur. Meanwhile, some challenges …

Silver nanowires with optimized silica coating as versatile plasmonic resonators Open

Martin Rothe, Yuhang Zhao, Günter Kewes, Zdravko Kochovski, Wilfried Sigle , et al. · 2019

Silver nanowires with optimized silica coating as versatile plasmonic\n resonators Open

Martin Rothe, Yuhang Zhao, Günter Kewes, Zdravko Kochovski, Wilfried Sigle , et al. · 2018

Metal nanoparticles are the most frequently used nanostructures in\nplasmonics. However, besides nanoparticles, metal nanowires feature several\nadvantages for applications. Their elongation offers a larger interaction\nvolume, their reson…

Thermodynamics of the Binding of Lysozyme to a Dendritic Polyelectrolyte: Electrostatics Versus Hydration Open

Qidi Ran, Xiao Xu, Joachim Dzubiella, Rainer Haag, Matthias Ballauff · 2018

The interaction between dendritic polyglycerol sulfate (dPGS) of the second generation and lysozyme was studied by isothermal titration calorimetry (ITC) at different temperatures and salt concentrations. Analysis by ITC showed that 2–3 ly…

Interaction of Proteins with Polyelectrolytes: Comparison of Theory to Experiment Open

Xiao Xu, Stefano Angioletti‐Uberti, Yan Lü, Joachim Dzubiella, Matthias Ballauff · 2018

We discuss recent investigations of the interaction of polyelectrolytes with proteins. In particular, we review our recent studies on the interaction of simple proteins such as human serum albumin (HSA) and lysozyme with linear polyelectro…

Catalysis by Metallic Nanoparticles in Solution: Thermosensitive Microgels as Nanoreactors Open

Rafael Roa, Stefano Angioletti‐Uberti, Yan Lü, Joachim Dzubiella, Francesco Piazza , et al. · 2018

Metallic nanoparticles have been used as catalysts for various reactions, and the huge literature on the subject is hard to overlook. In many applications, the nanoparticles must be affixed to a colloidal carrier for easy handling during c…

Counterion-Release Entropy Governs the Inhibition of Serum Proteins by Polyelectrolyte Drugs Open

Xiao Xu, Qidi Ran, Pradip Dey, Rohit Nikam, Rainer Haag , et al. · 2017

Dendritic polyelectrolytes constitute high potential drugs and carrier systems for biomedical purposes. Still, their biomolecular interaction modes, in particular those determining the binding affinity to proteins, have not been rationaliz…

Molecular simulations of electrolyte structure and dynamics in lithium–sulfur battery solvents Open

Chanbum Park, Matej Kanduč, Richard Chudoba, Arne Ronneburg, Sebastian Risse , et al. · 2017

Correlating pore size and shape to local disorder in microporous carbon: A combined small angle neutron and X-ray scattering study Open

Charl J. Jafta, Albrecht Petzold, Sebastian Risse, Daniel Clemens, Dirk Wallacher , et al. · 2017

We present a model free analysis of the structure of a microporous carbon (Kynol fiber cloth) with neutrons (SANS) and X-rays (SAXS). SANS with contrast matching is used to analyze the accessible pores. It is shown that the SAXS- and the S…

Charged Dendrimers Revisited: Effective Charge and Surface Potential of Dendritic Polyglycerol Sulfate Open

Xiao Xu, Qidi Ran, Rainer Haag, Matthias Ballauff, Joachim Dzubiella · 2017

We investigate key electrostatic features of charged dendrimers at hand of\nthe biomedically important dendritic polyglycerol sulfate (dPGS) macromolecule\nusing multi-scale computer simulations and Zetasizer experiments. In our\nsimulatio…

Interaction of human serum albumin with uremic toxins: a thermodynamic study Open

Shun Yu, Mirjam Schuchardt, Markus Tölle, Markus van der Giet, Walter Zidek , et al. · 2017

Interaction of uremic toxins with HSA is studied by ITC and understood in terms of thermodynamic driving forces.

Interaction of Charged Patchy Protein Models with Like-Charged Polyelectrolyte Brushes Open

Cemil Yigit, Matej Kanduč, Matthias Ballauff, Joachim Dzubiella · 2016

We study the adsorption of charged patchy particle models (CPPMs) on a thin film of a like-charged and dense polyelectrolyte (PE) brush (of 50 monomers per chain) by means of implicit-solvent, explicit-salt Langevin dynamics computer simul…

Divergence of the third harmonic stress response to oscillatory strain approaching the glass transition Open

Rabea Seyboldt, Dimitri Merger, Fabian Coupette, Miriam Siebenbürger, Matthias Ballauff , et al. · 2016

The leading nonlinear stress response in a periodically strained concentrated colloidal dispersion is studied experimentally and by theory. A thermosensitive microgel dispersion serves as well-characterized glass-forming model, where the s…

Reaction rate of a composite core–shell nanoreactor with multiple nanocatalysts Open

Marta Galanti, Duccio Fanelli, Stefano Angioletti‐Uberti, Matthias Ballauff, Joachim Dzubiella , et al. · 2016

We present a detailed theory for the reaction rate constant of a core–shell nanoreactor, consisting of a solid core surrounded by a hydrogel layer with several small embedded nanocatalysts.

Nonequilibrium structure of colloidal dumbbells under oscillatory shear Open

Nils Heptner, Fangfang Chu, Yan Lü, Peter Lindner, Matthias Ballauff , et al. · 2015

We investigate the nonequilibrium behavior of dense, plastic-crystalline suspensions of mildly anisotropic colloidal hard dumbbells under the action of an oscillatory shear field by employing Brownian dynamics computer simulations. In part…

Like-charged protein-polyelectrolyte complexation driven by charge patches Open

Cemil Yigit, Jan Heyda, Matthias Ballauff, Joachim Dzubiella · 2015

We study the pair complexation of a single, highly charged polyelectrolyte (PE) chain (of 25 or 50 monomers) with like-charged patchy protein models (CPPMs) by means of implicit-solvent, explicit-salt Langevin dynamics computer simulations…

Interaction of human serum albumin with short polyelectrolytes: a study by calorimetry and computer simulations Open

Shun Yu, Xiao Xu, Cemil Yigit, Markus van der Giet, Walter Zidek , et al. · 2015

Protein–polyelectrolyte complex formation was studied by combining experimental with simulation results. By varying salt concentration and temperature, our study reveals the importance of electrostatics and the release of counterions.

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