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
- Nucleation Assisted through the Memory of a Polymer Melt: A Different Polymorph Emerging from the Melt of another One
- 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
- Reversible Dehydration-Hydration of Poly(ethylene glycol) in Langmuir Monolayers of a Diblock Copolymer Inferred from Changes in Filament Curvature
- Emna Khechine, Sebastian Noack, Helmut Schlaad, Jun Xu, Günter Reiter, Renate Reiter. Langmuir 39 (2023) 2710–2718
- Improving the order of crystalline regions of poly(3-hexylthiophene) by crystallization from the self-nucleation domains
- Mina Alizadehaghdam, Farhang Abbasia, and Günter Reiter. Thermochimica Acta 717 (2022) 179352
- Determining Entanglement Molar Mass of Glassy Polyphenylenes Using Mechanochromic Molecular Springs
- Maximilian Raisch, Günter Reiter, Michael Sommer. ACS Macro Lett. 11, 760–765, 2022
- Editorial on the Special Topic “Polymer Crystallization”
- Jun Xu, Günter Reiter, and Rufina G. Alamo. Crystals 12, 618 (2022)
- 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
- The memory of thin polymer films generated by spin coating
- Günter Reiter, Farzad Ramezani, Jörg Baschnagel. EPJE 45 (2022) 51
- Bacteria-on-a-bead: probing the hydrodynamic interplay of dynamic cell appendages during cell separation
- Nora Sauter, Matteo Sangermani, Isabelle Hug, Urs Jenal, and Thomas Pfohl. Biology Communications 5 (2022) 1093
- Illumination of a Conjugated Polymer with Visible Light to Control Crystallization and Enhance Photoluminescence
- Yaser AlShetwi. Inaugural-Dissertation zur Erlangung des Doktorgrads der Fakultät für Chemie und Pharmazie, 2022
- Semi-crystalline poly(thioether) prepared by visible-light-induced organocatalyzed thiol-ene polymerization in emulsion
- Cuong Minh Quoc Le, Gautier Schrodj, Ibrahima Ndao, Brahim Bessif, Barbara Heck, Thomas Pfohl, Günter Reiter, Justine Elgoyen, Radmila Tomovaska and Abraham Chemtob. Macromol. Rapid Commun. 43 (2022) 2100740
- Illumination of Conjugated Polymers Reduces Nucleation Probability and Slows Down Crystal Growth Rate
- Yaser AlShetwi, Brahim Bessif, Michael Sommer, Günter Reiter. Macromolecules 54, 2021, 11478–11485
- Primary nucleation in metastable solutions of poly(3-hexylthiophene)
- Tianyu Wu, Sivasurender Chandran, Yao Zhang, Tianze Zheng, Thomas Pfohl, Jun Xu, Günter Reiter. Macromolecules 55 (2022) 3325–3334
- An investigation on the heat dissipation in Zn-substituted magnetite nanoparticles, coated with citric acid and pluronic F127 for hyperthermia application
- Sara Shatooti, Morteza Mozaffari, Günter Reiter, Diana Zahn, Silvio Dutz. Physica B: Physics of Condensed Matter 625 (2022) 41346856
- Successive melting and crystallization of poly(3-hexylthiophene) in the melt-memory domain versus isotropic melt domain
- Mina Alizadehaghdam, Farhang Abbasi, Günter Reiter. Journal of Materials Science 56 (2021) 19723–19737
- Heat dissipation in Sm3+ and Zn2+ co-substituted magnetite (Zn0.1SmxFe2.9-xO4) nanoparticles coated with citric acid and pluronic F127 for hyperthermia application
- S. Shatooti, M. Mozaffari, G. Reiter, D. Zahn, S. Dutz. Scientific Reports 11 (2021) 16795
- Controlled Switching from the Growth of Mono-Lamellar Polymer Crystals to the Formation of Stacks of Uniquely Oriented Lamellae
- Weixiang Chen, Brahim Bessif, Renate Reiter, Jun Xu, Günter Reiter. Macromolecules 54 (2021) 8135–8142
- Self-Seeding Procedure for Obtaining Stacked Block Copolymer Lamellar Crystals in Solution
- Brahim Bessif, Thomas Pfohl and Günter Reiter. Polymers 13 (2021) 1676
- Non-equilibrium Properties of Thin Polymer Films
- Sivasurender Chandran, Günter Reiter. In Matyjaszewski et al. (Eds.): Macromolecular Engineering: From Precise Synthesis to Macroscopic Materials and Applications, 4 Volumes, 2nd ed. Edition, Wiley-VCH Verlag GmbH, 2022. ISBN 9783527344550
- Concepts of nucleation in polymer crystallization
- Jun Xu, Günter Reiter, Rufina G. Alamo. Crystals 11 (2021) 304
- Continuous illumination of a conjugated polymer causes strong enhancement of photoluminescence
- Yaser AlShetwi, Daniel Schiefer, Michael Sommer. Günter Reiter. J. Phys. Chem. B 125 (2021) 5636–5644