Publications
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Recent Publications
Brahim Bessif, Barbara Heck, Thomas Pfohl, Cuong Minh Quoc Le, Abraham Chemtob, Valentina Pirela, Justine Elgoyhen, Radmila Tomovska, Alejandro Müller, Günter Reiter. Macromolecules 56 (2023) 1461–1470
We present investigations of the intricate crystallization and melting behavior of an alternating copolymer synthesized by photopolymerization of 2,2’dimercaptodiethyl sulfide (DMDS) with di(ethylene glycol)divinyl ether (DVE). Upon increasing temperature, we observed the succession of two distinctly separated melting processes, which we related to the sequential formation and disappearance of two crystalline polymorphs. Due to their well separated melting temperatures and, we labelled these polymorphs as LOW--form and HIGH--form, respectively. X-ray diffraction results confirmed differences in the parameters of the crystal unit cells. (more...)
Emna Khechine, Sebastian Noack, Helmut Schlaad, Jun Xu, Günter Reiter, Renate Reiter. Langmuir 39 (2023) 2710–2718
We investigated changes in the hydration state of poly(ethylene glycol) through morphological changes in Langmuir monolayers of a poly(ethylene glycol)-poly(L-lactide) (PEG-b-PLLA) diblock copolymer. When the PEG blocks were hydrated, we observed a remarkable morphology of bundles of ring-like filaments, arranged concentrically, yielding densely packed disk-like objects with a hollow centre. We attribute the uniform curvature of these filaments to a strong mismatch between the molecular volumes occupied by PLLA blocks and hydrated PEG blocks, respectively. (more...)
In situ dissolution and swelling of confined lamellar polymer crystals through exposure to humid air
Brahim Bessif, Thomas Pfohl, Barbara Heck, Yaser Alshetwi, Emna Khechine, Jun Xu, and Günter Reiter. Macromolecules 55, 6015–6022, 2022
Induced by exposure to humid air, we observed in-situ the temporal and spatial changes in thickness and morphology of sandwich-like polymer platelets of a block copolymer. These micron-size platelets consisted of a crystalline poly(ethylene oxide) (PEO) lamella confined between two glassy poly(styrene) (PS) layers, formed via crystallization of a hydrophobic-hydrophilic PS-b-PEO diblock copolymer. We observed first the dissolution of the confined crystalline PEO layers characterized by sharp dissolution front propagating at a constant velocity as described by case II diffusion of a liquid into a solid. (more...)
List of Publications
- Formation of asymmetric leaf-shaped crystals in ultrathin films of oriented polyethylene molecules resulting from high-temperature relaxation and recrystallization
- Huihui Li, Duanzijing Liu, Xinyun Bu, Zhenzhen Zhou, Zhongjie Ren, Xiaoli Sun, Renate Reiter, Shouke Yan, Günter Reiter. Macromolecules 53 (2020) 346-354
- Controlling phase transitions in Langmuir polymer films
- Abhijna Das. Inauguraldissertation der Fakultät für Mathematik und Physik 2020. DOI: 10.6094/UNIFR/167266
- Controlling Nucleation in Quasi-Two-Dimensional Langmuir Poly(L-lactide) Films through Variation of the Rate of Compression
- Abhijna Das, Ahmed S. El-Tawargy, Emna Khechine, Sebastian Noack, Helmut Schlaad, Günter Reiter, and Renate Reiter. Langmuir 35 (2019) 6129-6136
- Activity of the Gramicidin A Ion Channel in a Lipid Membrane with Switchable Physical Properties
- Renate Reiter, Ekaterina Zaitseva, Gerhard Baaken, Ibrahim Halimeh, Jan C. Behrends, Andreas Zumbuehl. Langmuir 35 (2019) 14959-14966
- Dewetting Rheology for Determining Viscoelastic Properties of Non-equilibrated Thin Polymer Films
- Austine A. Mulama, Sivasurender Chandran, Konstantinos Roumpos, Andrew O. Oduor, and Günter Reiter. Macromolecules 52 (2019) 7894-7903
- Relation between Charge Transport and the Number of Interconnected Lamellar Poly(3-hexylthiophene) Crystals
- Binghua Wang, Jingbo Chen, Changyu Shen, Günter Reiter, Bin Zhang. Macromolecules 52 (2019) 6088-6096
- Fully Isotactic Poly(p-methylstyrene): Precise Synthesis via Catalytic Polymerization and Crystallization Studies
- Tianyu Wu, Luis Valencia, Thomas Pfohl, Barbara Heck, Günter Reiter, Pierre Lutz, Rolf Mülhaupt. Macromolecules 52 (2019) 4839-4846
- Photoelectronic properties of composite films based on conductive polymer PIDT-BT and single-walled carbon nanotubes
- Andrey N. Aleshin, Baode Zhang, Petr A. Aleshin, Vasily N. Petrov, Irina N. Trapeznikova, Günter Reiter, Janis Kleperis. SN Applied Sciences 1 (2019) 1101
- Segmental Rearrangements Relax Stresses in Nonequilibrated Polymer Films
- Sivasurender Chandran, Günter Reiter. ACS Macro Letters, 8, 646, (2019)
- Thermodynamic Features of Perfectly Crystalline Poly(3-Hexylthiophene) Based on Flory’s Relation
- Mina Alizadehaghdam, Silvia Siegenführ, Farhang Abbasi, and Günter Reiter. Journal of Polymer Science Part B: Polymer Physics 57, 431–437 (2019)
- Thermodynamic Features of Perfectly Crystalline Poly(3-hexylthiophene) Revealed Through Studies of Imperfect Crystals
- Mina Alizadehaghdam, Barbara Heck, Silvia Siegenführ, Farhang Abbasi, and Günter Reiter. Macromolecules 52 (2019) 2487–2494
- A Structural Fibrillation Parameter from Small Angle X-ray Scattering to Quantify Pulp Refining
- Jia Mao, Barbara Heck, Hatem Abushammala, Günter Reiter, and Marie-Pierre Laborie. Cellulose 26 (2019) 4265–4277
- Following isothermal and non-isothermal crystallization of poly(3- hexylthiophene) thin films by UV-vis spectroscopy
- Mina Alizadehaghdam, Barbara Heck, Silvia Siegenführ, Yaser AlShetwi, Fanuel M. Keheze, Sebastian Stäter, Farhang Abbasia, Günter Reiter. Polymer 210 (2020) 122959
- Snails as living 3D printers: free forms for the architecture of tomorrow
- Christoph Allgaier, Benjamin Felbrich, Frederik Wulle, Emna Khechine, James H. Nebelsick, Achim Menges, Günter Reiter, Renate Reiter, Armin Lechler, Alexander Verl, Karl-Heinz Wurst. In Knippers, J; Schmid, U.; Speck, T. (eds.) Biomimetics for Architecture, Birkhäuser, Basel 2019, pp 126-133. (ISBN: 978-3-0356-1791-7)
- Controlling the Growth of Stacks of Correlated Lamellar Crystals of a Block Copolymer
- Sumit Majumder, Renate Reiter, Jun Xu and Günter Reiter. Macromolecules 52 (2019) 9665-9671
- Determination of the Critical Size of Secondary Nuclei on the Lateral Growth Front of Lamellar Polymer Crystals
- Shujing Zhang, Jiarui Han, Yang Gao, Bao-Hua Guo, Günter Reiter, Jun Xu. Macromolecules 52 (2019) 7439-7447
- A Nucleation Mechanism Leading to Stacking of Lamellar Crystals in Polymer Thin Films
- Sumit Majumder, Purushottam Poudel, Hui Zhang, Jun Xu, Günter Reiter. Polymer International 69 (2020) 1058
- Processing Pathways Decide Polymer Properties at the Molecular Level
- S. Chandran, J. Baschnagel, D. Cangialosi, K. Fukao, E. Glynos, L. M. C. Janssen, M. Müller, M. Muthukumar, U. Steiner, J. Xu, S. Napolitano, and G. Reiter. Macromolecules 52 (2019) 7146-7156
- Controlling the Pore Size in Conjugated Polymer Films via Crystallization-Driven Phase Separation
- Shaowen Guo, Changyu Shen, Jingbo Chen, Günter Reiter, Bin Zhang. Soft Matter 15 (2019) 2981-2989
- Adapted Creep Test for the Study of Non-Equilibrated Thin Polymer Films
- Farzad Ramezani. Inaugural-Dissertation zur Erlangung des Doktorgrades der Fakultät für Mathematik und Physik der Albert-Ludwigs-Universität Freiburg 2019