1. Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan
2. Department of Chemistry, Stella Maris College, Affiliated to the University of Madras, Chennai 600086, Tamil Nadu, India
3. Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan
4. Department of Materials, Imperial College London, London SW7 2AZ, U.K.