Francesco Dallari, Irina Lokteva, Johannes Möller, Wojciech Roseker, Claudia Goy, Fabian Westermeier, Ulrike Boesenberg, Jörg Hallmann, Angel Rodriguez-Fernandez, Markus Scholz, Roman Shayduk, Anders Madsen, Gerhard Grübel, Felix Lehmkühler
Stimuli-responsive polymers are an important class of materials with many applications in nanotechnology and drug delivery. The most prominent one is poly- N -isopropylacrylamide (PNIPAm). The characterization of the kinetics of its change after a temperature jump is still a lively research topic, especially at nanometer-length scales where it is not possible to rely on conventional microscopic techniques. Here, we measured in real time the collapse of a PNIPAm shell on silica nanoparticles with megahertz x-ray photon correlation spectroscopy at the European XFEL...
April 19, 2024: Science Advances