1. Department of Chemical Engineering, National Tsing Hua University, Hsin-Chu 30013, Taiwan
2. Department of Chemical and Materials Engineering, Chang Gung University, Kwei-Shan Tao-Yuan 33302, Taiwan
3. Grupo de Polímeros USB, Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080-A, Venezuela
4. Department of Chemistry, University of Athens, 15771 Panepistimiopolis Zografou, Athens, Greece