1. Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
2. Institute of Materials Research and Engineering; Agency for Science, Technology and Research (A*STAR); 2 Fusionopolis Way, Innovis, #08-03 Singapore 138634 Singapore
3. Technospex Pte Ltd; 1092 Lower Delta Road #04-01 Tiong Bahru Industrial Estate Singapore 169203 Singapore