Publications
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Recent Publications
Da Huang, Thorsten Hugel, and Günter Reiter. Macromolecules, published online
We have investigated the formation of millimeter-long filaments induced by spin-coating ca. 130 °C dilute para-xylene solutions of rapidly crystallizable polyethylene chains with a contour length in the micrometer range onto ca. 80 °C mica substrates. These filaments were radially oriented and accumulated on the periphery of the substrate. Our observations can be explained by the stretching of polymers through the flow field induced by spinning the solution on a solid substrate. The corresponding loss in conformational entropy emphasized attractive interactions between polymers, which resulted in the formation of bundles and their assembly into long filaments. Caused by a Plateau–Rayleigh-type instability of a liquid coating on a solid filament and due to crystallization, these filaments were decorated with various small-scale structures. (more...)
Mina Alizadehaghdam, Farhang Abbasi, Günter Reiter. J. Phys. Chem. C 128 (2024) 4757–4765
Crystallization of poly(3-hexylthiophene) (P3HT) was studied in mixtures of different concentrations of 3-hexylthiophene (3HT) as a diluent. Two coexisting crystal populations, socalled “thin” and “thick” crystals, with melting temperatures differing by more than 10 °C were observed in these mixtures. Intriguingly, the “thick” crystals represented transient unstable structures, with a mass fraction that was the highest ФH for rapidly crystallized P3HT in presence of significant amount of diluent. Reflecting its dependence on growth kinetics, ФH decreased with increasing crystallization temperature, extended crystallization time or lower cooling rate. The presence of a diluent led to a “depression” of the melting temperature, described by Raoult’s law and the Flory equation, which was similar for P3HT samples crystallized in various ways. (more...)
Claas-Hendrik Stamp, Binyam Solomon, Friederike Lang, Efstathios Mitropoulos and Thomas Pfohl.
Lab Chip 23 (2023) 3662-3670
Controlling fluid flow in microfluidic devices and adapting it to varying conditions by selectively regulating hydrodynamic properties is of critical importance, as the field of microfluidics faces increasingly complex challenges in its wide range of applications. One way to manipulate flows in microfluidic devices is to introduce elastic elements that can be actively or passively deformed. In this work, we developed a membrane-based microfluidic device that allows us to study the deformation of swollen thin membranes as a function of the volume fractions in binary mixtures – here isopropanol and water. (more...)
List of Publications
- Large area crystal surfaces of precisely sidebranched polyethylenes: Preparation, surface order and functionalization
- Rainhard Machatschek. Inaugural-Dissertation zur Erlangung des Doktorgrades der Fakultät für Chemie und Pharmazie der Albert-Ludwigs-Universität Freiburg im Breisgau, 2016
- Probing the Elasticity of Langmuir Polymer Films of High Molecular Weight Poly (γ-benzyl-L-glutamate)
- Emna Khechine. Master Thesis im Studiengang M.Sc. Sustainable Materials, 2016
- Self-assembled nanotubes and nanoribbons of aromatic diamide-esters
- Asad Jamal. Inaugural-Dissertation zur Erlangung des Doktorgrads der Fakultät für Mathematik und Physik der Universität Freiburg, 2016
- Formation and Optical Characterization of Single Crystals of Poly(3-Hexylthiophene) (P3HT), a Model Conjugated Polymer
- John O. Agumba. Inaugural-Dissertation zur Erlangung des Doktorgrads der Fakultät für Mathematik und Physik der Universität Freiburg, 2016
- History Dependent Temporal Changes of Properties of Thin Polymer Films
- Günter Reiter. In: Non-equilibrium Phenomena in Confined Soft Matter. Ed. Simone Napolitano. Springer 2015
- Consequences of a Single Double Bond within a Side-Group on the Ordering of Supra-Molecular Polymers
- Roozbeh Shokri, Olga Guskova, Asad Jamal, Kaiwan Jahanshahi, Benjamin Isare, Laurent Bouteiller, Laurent Simon, Jens-Uwe Sommer, Günter Reiter. The Journal of Physical Chemistry, Part C 119 (2015) 22596–22603
- Different surface sensing of the cell body and nucleus in healthy primary cells and in a cancerous cell line on nanogrooves
- Patricia Davidson, Maxence Bigerelle, Günter Reiter and Karine Anselm. Biointerphases 10, 031004 (2015) / DOI: 10.1116/1.4927556
- How Chain-Folding Crystal Growth Determines Thermodynamic Stability of Polymer Crystals
- Xiaoming Jiang, Günter Reiter, Wenbing Hu. J. Phys. Chem. B, 120 (2016) 566–571
- Stabilization of nuclei of lamellar polymer crystals: Insights from a comparison of the Hoffman-Weeks line with the crystallization line
- Jun Xu, Barbara Heck, Hai-Mu Ye, Jing Jiang, Yi-Ren Tang, Jin Liu, Bao-Hua Guo, Renate Reiter, Dongshan Zhou, Günter Reiter. Macromolecules 49 (2016) 2206–2215
- Role of Preparation Pathways and Tacticity on the Non-Equilibrium Dynamcis of Polystyrene Films
- Rishab Handa. Master Thesis im Studiengang M.Sc. Sustainable Materials, 2016
- Variation of the contact resistance with electric current for gold electrodes on a squaraine single crystal
- Leonid Govor, Guenter Reiter, and Jurgen Parisi. Phys. Status Solidi A 212 (2015) 2738–2746, DOI 10.1002/pssa.201532241
- Simulation of secondary nucleation of polymer crystallization via a model of microscopic kinetics
- Kun-Lun Xu, Bao-Hua Guo, Renate Reiter, Günter Reiter, Jun Xu. Chinese Chemical Letters 26, 1105–1108 (2015) / DOI: 10.1016/j.cclet.2015.06.002
- From holes to drops to toroids: Conditions for the transcription of surface patterns into three-dimensional morphologies via rim instabilities in the course of dewetting
- Samer Al Akhrass, Laurent Vonna and Günter Reiter. In: Polymer Surfaces in Motion: Unconventional Patterning Methods, Eds. Juan Rodriguez-Hernandez and Carlos Drummond. Springer 2015
- Tuning Morphologies of Langmuir Polymer Films Through Controlled Relaxations of Non-Equilibrium States
- Sivasurender Chandran, Stefanie Dold, Amaury Buvignier, Kai-Steffen Krannig, Helmut Schlaad, Günter Reiter, and Renate Reiter. Langmuir 2015, 31, 6426−6435. DOI: 10.1021/acs.langmuir.5b01212
- High Temperature Stability of Dewetting-Induced Thin Polyethylene Filaments
- Bin Zhang, Jingbo Chen, Paul Freyberg, Renate Reiter, Rolf Mülhaupt, Jun Xu, Günter Reiter. Macromolecules 48, 1518–1523 (2015)
- Triangular dewetting by symmetry breaking in blends of stiff and flexible polymers
- Paul Freyberg. Inaugural-Dissertation zur Erlangung des Doktorgrades der Fakultät für Mathematik und Physik der Albert-Ludwigs-Universität Freiburg, 2015
- Conductive atomic force microscopy measurements on organic nanocrystals
- Sven Renkert. Master Thesis, Fakultät für Mathematik und Physik der Albert-Ludwigs-Universität Freiburg, 2014
- The influence of the additive composition on degradation induced changes in poly(ethylene-co-vinyl acetate) during photochemical aging
- Angelika Beinert, Cornelia Peike, Ines Dürr, Michael D. Kempe, Günter Reiter, Karl-Anders Weiß. 29th European PV Solar Energy Conference and Exhibition, 22-26 Sept. 2014, Amsterdam, The Netherlands
- Wie kristallisieren Polymere?
- Gert Strobl. Physik Journal 13, 47-50 (2014)
- The Crucial Role of Cadmium Acetate-Induced Conformational Restriction in Microscopic Structure and Stability of Polystyrene-block-Polyvinyl pyridine Thin Films
- Feifei Xue, Hongfei Li, Jichun You, Conghua Lu, Günter Reiter, Shichun Jiang. Polymer 55, 5801-5810 (2014)