1. Department of Chemistry; Mahidol University; Bangkok Thailand
2. LCPP-CNRS/ESCPE; 43 Blvd du 11 Novembre 1918 69616 Villeurbanne France
3. Dutch Polymer Institute (DPI); PO Box 902, 5600 AX Eindhoven The Netherlands
4. Department of Chemical Engineering; Queen's University, Kingston; Ontario Canada