1. Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
2. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
3. BASF Schweiz AG, R-1059, Mattenstrasse, 4058 Basel, Switzerland
4. BASF SE, J542, 67056 Ludwigshafen, Germany