Publications
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Recent Publications
Raphael Hertel, Maximilian Raisch, Michael Walter, Günter Reiter, Michael Sommer. Angew. Chem. Int. Ed. 2024, e202409369
Sterically distorted donor-acceptor p‑systems, termed DA springs, can be progressively planarized under mechanical load causing a bathochromic shift of the photoluminescence (PL) spectrum. By combining theory and experiment, we here use a simple linear force calibration for two different conformational mechanochromophores to determine molecular forces in polymers from the mechanochromic shift in PL wavelength during multiple uniaxial tensile tests. Two systems are used, i) a highly entangled linear glassy polyphenylene and ii) a covalent elastomeric polydimethylsiloxane network. The mean forces estimated by this method are validated using known threshold forces for the mechanochemical ring-opening reactions of two different spiropyran force probes. The agreement between both approaches underlines that these DA springs provide the unique opportunity for the online monitoring of local molecular forces present in diverse polymer matrices.(more...)
"Printing" on Polymer Single Crystals through Microregional Heating
Tianyu Wu, Haimu Ye, Xinyi Pan, Yaning He, Jun Xu, Günter Reiter. ACS Appl. Polym. Mater. 2024, 6, 14, 7969–7977
Polymer single crystals are composed of well-ordered polymer chains and possess a characteristic symmetric shape. If one can precisely control the microregional morphology, polymer single crystals have the potential to be used as functional templates for applications like information storage or cell culture. However, with current experimental approaches, it is rather difficult to generate predictable structures of defined size within polymer single crystals. Here, we propose a research strategy based on a combination of fluorescence labeling and microregional heating by irradiation with focused red light. This approach enabled us to locally heat single crystals while simultaneously following the thereby induced changes via fluorescence imaging with a micrometer lateral resolution. We found that polymers diffused out of the heated region within a stacked single crystal and thereby produced a hole at the irradiated location. (more...)
Da Huang, Thorsten Hugel, and Günter Reiter. Macromolecules 2024, 57, 3696–3705
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...)
List of Publications
- Polymer crystallization under nano-confinement of droplets studied by molecular simulations
- Wenbing Hu, Tao Cai, Yu Ma, Jamie K. Hobbs, O. Farrance, Günter Reiter. Faraday Discussions 143, 129-141 (2009)
- Cloning Polymer Single Crystals through Self-seeding
- Jianjun Xu, Yu Ma, Wenbing Hu, Matthias Rehahn, and Günter Reiter. Nature Materials 8, 348-353 (2009)
- Structuring the Surface of Crystallizable Polymers with an AFM Tip
- Cvetlin Vasilev, Günter Reiter, Khalil Jradi, Sophie Bistac, Marjorie Schmitt. In: "Scanning Probe Microscopy in Nanoscience and Nanotechnology" Part 3, Ed. Bharat Bhushan, "NanoScience and Technology" Series, Springer 2010, ISBN 978-3-642-03534-0
- Visualizing properties of polymers at interfaces: Relations between molecular features and macroscopic behaviour
- Günter Reiter. In “Soft Matter: Scattering, Imaging and Manipulation”, Volume IV: Imaging and Manipulation Techniques Eds.: R. Pecora, R. Borsali, Springer 2008, ISBN 978-1402044649
- Some general remarks on crystallization in the presence of additives
- Günter Reiter and Jean-Georges Barth. Elemente der Naturwissenschaft 92, 39-61 (2010)
- Network swelling competing with translational entropy in autophobic polymer dewetting
- W. Beziel, G. Reiter, E. Drockenmuller, R.-V. Ostaci, S. Al Akhrass, F. Cousin, M. Sferrazza. Europhysics Letters 90, 26008 (2010)
- Processes of Ordered Structure Formation in Polypeptide Thin Film Solutions
- Ioan Botiz, Helmut Schlaad, Günter Reiter. Adv. in Polymer Science, 242 (2011) 117-149
- Multi-curvature liquid meniscus in a nanochannel: Evidence of interplay between intermolecular and surface forces
- Pilnam Kim, Ho-Young Kim, Jae Kwan Kim, Günter Reiter, Kahp Y. Suh. Lab Chip 9, 3255-3260 (2009)
- Self-assembled patterns from evaporating layered fluids
- L. V. Govor, J. Parisi, G. H. Bauer, G. Reiter. Journal of Physics - Condensed Matter 21, 264015 (2009)
- Dewetting as an investigative tool for studying properties of thin polymer films
- Günter Reiter, Samer Al Akhrass, Moustafa Hamieh, Pascal Damman, Sylvain Gabriele, Thomas Vilmin, Elie Raphaël. Eur. Phys. J. - Special Topics 166, 165-172 (2009)
- Characterizing and modeling the non-linear viscoelastic tensile deformation of a glass fiber reinforced polypropylene
- J. Fritsch, S. Hiermaier, G. Strobl. Composites Science and Technology 69, 2460-2466 (2009)
- Colloqium: Laws controlling crystallization and melting in bulk polymers
- G. Strobl. Rev. Mod. Phys. 81, 1287-1300 (2009)
- Deformation of cholesteric elastomers by uniaxial stress along the helix axis
- Werner Stille. Eur. Phys. J. E 28, 57-71 (2009)
- 高分子物理学: 理解其结构和性质的基本概念
- 作者:(德国)G.斯特罗伯 译者:胡文兵 蒋世春 门永峰 北京:科学出版社 2009, ISBN 978-7-03-022441-5
- Metastable Untwisted States in Cholesteric Elastomers
- Werner Stille. Macromolecules 42, 7979-7981 (2009)
- Gradient Interfaces in SBS and SBS/PS Blends and Their Influence on Morphology Development and Material Properties
- Yi Thomann, Ralf Thomann, Alfred Hasenhindl, Rolf Mülhaupt, Barbara Heck, Konrad Knoll, Helmut Steininger, Kay Saalwächter. Macromolecules 42, 5684-5699 (2009)
- Understanding crystal orientation in quasi-one-dimensional polymer systems
- Yu Ma, Wenbing Hu, Jamie Hobbs, Guenter Reiter. Soft Matter 4, 540-543 (2008)
- Oligonucleotide nanostructured surfaces: effect on Escherichia coli curli expression
- Nicolas Cottenye, Francisco Teixeira Jr., Arnaud Ponche, Günter Reiter, Karine Anselme, Wolfgang Meier, Lydie Ploux, Corinne Vebert-Nardin. Macromolecular Bioscience 8, 1161-1172 (2008)
- Morphological Instabilities of Polymer Crystals
- Nikolay Grozev, Ioan Botiz, Günter Reiter. Eur. Phys. J. E 27, 63-71 (2008)
- Crystal nucleation enhanced at the diffusive interface of immiscible polymer blends
- Yu Ma, Liyun Zha, Wenbing Hu, Günter Reiter, Charles C. Han. Phys. Rev. E 77, 061801 (2008)