1. Advanced Materials Research Group, Department of Materials and Metallurgical Engineering, Faculty of Engineering; Rajamangala University of Technology Thanyaburi; Thailand
2. Department of Chemistry, Faculty of Science; King Mongkut's University of Technology Thonburi; Bangkok Thailand
3. Conductive and Electroactive Polymers Research Unit, Petroleum and Petrochemical College; Chulalongkorn University; Bangkok Thailand