1. GE China Technology Center, Zhangjiang High Tech Park, Pudong, Shanghai, 201203, PR China; Department of Chemical Engineering and Chemistry and Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands; and Dutch Polymer Institute, P.O. Box 902, 5600 AX, Eindhoven, The Netherlands