1. Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, P.R. China
2. Department of Physical and Environmental Science, University of Toronto, 1265 Military Trail, Toronto M1C 1A4, Canada
3. Dutch-Belgian Beamline (DUBBLE), ESRF−The European Synchrotron Radiation Facility, CS 40220, 38043 Grenoble Cedex 9, France
4. Faculty of Applied Sciences, Delft University of Technology, Mekelweg 5, 2628 CD Delft, The Netherlands
5. Department of Chemistry, KU Leuven, Celestijnenlaan 200F box 2404, 3001 Leuven, Belgium
6. School of Chemistry, University College Dublin, Belfield, Dublin 4, D04 V1W8, Ireland