1. Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
2. Department of Chemistry, Faculty of Science and Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand
3. Department of Materials Science and Engineering and Department of Chemistry, City University of Hong Kong, Kowloon Tong, Hong Kong, SAR, China
4. Center of Excellence in Material Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand