Struktur und Dynamik von Makromolekülen

Die schnellen Entwicklungen in der synthetischen Chemie in den letzten Jahrzehnten ermöglichten die Herstellung einer großen Vielfalt von Makromolekülen mit kontrollierter Topologie und Funktionalität. Wir konzentrieren uns auf das Verständnis der Beziehung zwischen der molekularen Architektur, Zusammensetzung und Verarbeitung einerseits und der Morphologie und den physikalischen Eigenschaften der makromolekularen Materialien andererseits. Dieses Verständnis ist nicht nur von grundlegendem Interesse, sondern wird auch dazu beitragen, neue Materialien für verschiedene Anwendungen zu entwerfen. Zu den spezifischen Forschungsthemen gehören:

 

• Mobility in polymer networks:  Kaloian Koynov, Hans-Jürgen Butt
  
  Krzysztof Piechocki, Kaloian Koynov, Justyna Piechocka, Kordian Chamerski, Jacek Filipecki, Paulin Maczugowska, Marcin Kozanecki: Small molecule diffusion in poly-(olygo ethylene glycol methacrylate) based hydrogels studied by fluorescence correlation spectroscopy. Polymer, 2022, 244, 124628 (doi 10.1016/j.polymer.2022.124628)
  
  Sascha Schmitt, Galit Renzer, Jennifer Benrath, Andreas Best, Shuai Jiang, Katharina Landfester, Hans-Juergen Butt, Roberto Simonutti, Daniel Crespy, Kaloian Koynov: Monitoring the Formation of Polymer Nanoparticles with Fluorescent Molecular Rotors. Macromolecules, 2022, 55, 7284-7293 (doi 10.1021/acs.macromol.2c01132)
  
  Montis C, Koynov K, Best A, Baglioni M, Butt H-J, Berti D, Baglioni P: Surfactants mediate the dewetting of acrylic polymer films commonly applied to works of art. ACS Applied Materials and Interfaces, 2019, 11, 27288-27296 (doi 10.1021/acsami.9b04912) 
   
• Imbibition and crystalliztion of soft matter in confinement:  George Floudas
  
  Tu, C.-H.; Veith, L.; Butt, H.-J.; Floudas, G.: Ionic Conductivity of a Solid Polymer Electrolyte Confined in Nanopores. Macromolecules 55 (4), pp. 1332 - 1341 (2022) doi.org/10.1021/acs.macromol.1c02490
  
  Chien Hua Tu, Jiajia Zhou, Masao Doi, Hans-Jürgen Butt, and George Floudas, "Interfacial Interactions During In Situ Polymer Imbibition in Nanopores," Physical Review Letters 125 (12), 127802 (2020). doi.org/10.1103/PhysRevLett.125.127802
   
• Macromolecular complexes in solution:  Kaloian Koynov, Hans-Jürgen Butt
  
  Sascha Schmitt, Lutz Nuhn, Matthias Barz, Hans-Juergen Butt, Kaloian Koynov: Shining Light on Polymeric Drug Nanocarriers with Fluorescence Correlation Spectroscopy. Macromolecular Rapid Communications, 2022, 43, 2100892 (doi 10.1002/marc.202100892)
  
  Mierczynska-Vasilev A, Bindon K, Gawel R, Smith P, Vasilev K, Butt HJ, Koynov K: Fluorescence correlation spectroscopy to unravel the interactions between macromolecules in wine. Food Chemistry, 2021, 352, 129343 (doi 10.1016/j.foodchem.2021.129343)
   
• Photo-responsive polymer materials: Si Wu
  
  Chen, M.; Gong, N.; Sun, W.; Han, J.; Liu, Y.; Zhang, S.; Zheng, A.; Butt, H.-J.; Liang, X.; Wu, S.: Red‐Light‐Responsive Metallopolymer Nanocarriers with Conjugated and Encapsulated Drugs for Phototherapy Against Multidrug‐Resistant Tumors. Small, 2201672 (2022) doi.org/10.1002/smll.202201672
  
  Yazhi Liu, Shuofeng Liang, Chenrui Yuan, Andreas Best, Michael Kappl, Kaloian Koynov, Hans-Jürgen Butt, and Si Wu, "Fabrication of Anticounterfeiting Nanocomposites with Multiple Security Features via Integration of a Photoresponsive Polymer and Upconverting Nanoparticles," Advanced Functional Materials 31 (37), 2103908 (2021). doi.org/10.1002/adfm.202103908
   
• Dynamics in ultrathin polymer films: Kaloian Koynov, Werner Steffen, George Floudas, Rüdiger Berger
  
  Li XM, Silge S, Saal A, Kircher G, Koynov K, Berger R, Butt HJ: Adaptation of a Styrene-Acrylic Acid Copolymer Surface to Water. Langmuir, 2021, 37, 1571-1577 (doi 10.1021/acs.langmuir.0c03226)
  
  Hesami M, Steffen W, Butt HJ, Floudas G, Koynov K: Molecular Probe Diffusion in Thin Polymer Films: Evidence for a Layer with Enhanced Mobility Far above the Glass Temperature. ACS Macro Letters, 2018, 7, 425-430 (doi 10.1021/acsmacrolett.8b00103)
   
• Macromolecules with complex architecture: George Floudas, Hans-Jürgen Butt
  
  Galanos, E.; Steube, M.; Butt, H.-J.; Frey, H.; Floudas, G.: Ordering kinetics of a tapered copolymer based on isoprene and styrene. The Journal of Chemical Physics 156 (13), 134904 (2022) doi.org/10.1063/5.0086753
  
  Galanos, E.; Wahlen, C.; Butt, H.-J.; Frey, H.; Floudas, G.: Phase Diagram of Tapered Copolymers Based on Isoprene and Styrene. Macromolecular Chemistry and Physics, 2200033 (2022) doi.org/10.1002/macp.202200033