1. Natural Sciences Research Institute, University of the Philippines Diliman, Quezon City 1101, Philippines
2. Institute of Chemistry, University of the Philippines Diliman, Quezon City 1101, Philippines
3. Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis 138634, Singapore
4. Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island 627833, Singapore