1. University of Würzburg, Chemical Technology of Advanced Materials, D-97070 Würzburg, Germany
2. Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland
3. Laboratory for Neutron Scattering, ETH Zurich and Paul Scherrer Institute, CH-5232 Villigen, Switzerland
4. University of Potsdam, Institute of Physical and Theoretical Chemistry, D-14476 Potsdam, Germany
5. National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
6. Fraunhofer-Institut für Silicatforschung ISC, Neunerplatz 2, 97082 Würzburg, Germany