NEWS
June 2024
DFG Project SmartBrane: joint SANS beam time at the SAM instrument at the ILL (Grenoble, France)
April 2024
2nd - 5th April
12 years of CRC 985
- Functional Microgels and Microgel Systems -
Team of the DFG project SmartBrane
January 2024
The article A review of stimuli-responsive polymer-based gating membranes was selected as a 2024 HOT arcticle in PCCP
Back Cover: In article Unusual Shell Morphologies of Responsive Amino Core-Shell Microgels Induced by pH During Shell Synthesis highlight the impact of the reaction pH during the formation of responsive amino core-shell microgels. While very fuzzy shells with particulate structures are formed at acidic or intermediate pH, denser core-shell microgels together with a secondary species are formed at alkaline conditions. The results point out the possibilities and importance of pH-control during synthesis of pH-responsive microgels.
October 2023
Tim Julian Stank was awarded to the poster prize of the SEPAWA/EDC conference (25. October 2023, Berlin).
January 2023
Titlepage published in Langmuir:
Growth of Smart Microgels in a Flow Reactor Scrutinized by In-Line SAXS
June 2022
Titlepage published in Macromolecular Chemistry and Physics:
Effect of Methacrylic Acid in PNNPAM Microgels on the Catalytic Activity of Embedded Palladium Nanoparticles
January 2022
Professor Dr. Thomas Hellweg was appointed to Editorial Board Member of Colloid und Polymer Science
September 2021
Since 2014, the European Spallation Source ESS in Lund is under construction. Using a linear accelerator, neutrons will be generated which allow for example the investigation of soft matter structures and the study many new physical processes. In order to analyze the samples with the highest possible efficiency, researchers are developing special sample environments.
In an interview with Welt der Physik, Thomas Hellweg from Bielefeld University explains these special environments and how samples can be studied with neutrons in general.
August 2021
The academic editors of the journal Polymers have selected the article "Importance of pH in Synthesis of pH-Responsive Cationic Nano- and Microgels" as one of the Editor's Choice Articles and believe that our paper is particularly interesting in the field.
July 2021
Professor Dr. Thomas Hellweg was appointed to Specialty Chief Editor of Colloids and Emulsions (specialty section of Frontiers in Soft Matter)
June 2021
New Research field "Smart Microgel based Membranes"
Within the framework of this new research line we have published recently two works.
These works show the high potential of microgel based membranes for different applications e.g. in electrochemical cells or catalytically active systems.
April 2021
BMBF instrumentation project: “FlexiProb” sample environment for the ESS:
Aim of the project is the development and implementation of dedicated soft matter sample environments for small angel neutron scattering instruments at the ESS. The project is in collaboration with the von Klitzing group at TU Darmstadt and the Müller-Buschbaum group at TU Munich.
In this context, 3 publications were issued in Appl. Sci. 2021, 11(9),:
Part I: The In Situ SANS/DLS Setup: https://www.mdpi.com/2076-3417/11/9/4089
Part II: The GISANS setup:https://www.mdpi.com/2076-3417/11/9/4036
Part III: The macroscopic foam cell: https://www.mdpi.com/2076-3417/11/11/5116
January 2020
Personal news from Bielefeld University: Professor Dr. Thomas Hellweg was appointed to the Advisory Board of the Laue-Langevin Institute
July 2019
Thomas Hellweg is appointed as a member of the Editional Board of Polymers.
June 2019
Feature Article in Langmuir: Nanogels and Microgels: From Model Colloids to Applications, Recent Developments, and Future Trends
May 2019
Visit of the ESS construction site after the 22nd Science Advisory Committee meeting in Lund.
Form left to right: Thomas Hellweg, Kell Mortensen, Derek Logan, Fred E. Wietfeldt, Andreas Schreyer, Ken Andersen, Martin Mansson, Esko Oksanen, Monika Spano und Marie Plazanet. Picture: Zsuzsa Helyes (ESS).
January 2019
Titlepage published in Langmuir:
In the framework of a French-German project with Université de Montpellier (group of Julian Oberdisse) the Hellweg group has determined the internal structure of thermo-responsive microgels using a reverse Monte-Carlo method for the analysis of small angle neutron scattering data.
13. September 2018
New article published in Scientific Reports:
Volume phase transition kinetics of smart N-n-propylacrylamide microgels studied by time-resolved pressure jump small angle neutron scattering
Oliver Wrede, Yvonne Reimann, Stefan Lülsdorf, Daniel Emmrich, Kristina Schneider, Andreas Josef Schmid, Diana Zauser, Yvonne Hannappel, André Beyer, Ralf Schweins, Armin Gölzhäuser, Thomas Hellweg & Thomas Sottmann
September 2018
Participation at European Colloid and Interface Society (ECIS) held from 2nd to 7th September 2018 in Ljubljana, Slovenia
22. August 2018
New article published in Langmuir:
Smart Starch-Poly(N-isopropylacrylamide) Hybrid Microgels: Synthesis, Structure, and Swelling Behavior
Daiani C. Leite, Sergej Kakorin, Yvonne Hertle, Thomas Hellweg and Nádya P. da Silveira
13. August 2018
New article published in Molecular Pharmaceutics:
Interaction of the Saponin Aescin with Ibuprofen in DMPC Model Membranes
Ramsia Sreij, Sylvain Prévost, Carina Dargel, Rajeev Dattani, Yvonne Hertle, Oliver Wrede and Thomas Hellweg
17.July 2018
New article published in The Journal of Chemical Physics:
Polyacrylates in the presence of an extraordinary monovalent cation?Solution behavior and metal nanoparticle formation
