1. Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569 Stuttgart, Germany
2. BASF SE, Carl-Bosch-Str. 38, 67056 Ludwigshafen, Germany
3. BASF Polyurethanes GmbH, Elastogranstr. 60, 49448 Lemförde, Germany
4. ALBA Synchrotron, Carrer de la Llum 2-26, 08290 Cerdanyola del Vallès, Barcelona, Spain