1. Department of Chemistry and NUS MedChem Program of the Office of Life Sciences, 3 Science Drive 3, National University of Singapore, Singapore 117543
2. CNAB—UMR5084, Université de Bordeaux, UMR CNRS 5248, Institute Européen de Chimie et Biologie, 2 rue Robert Escarpit, 33607 Pessac Cedex, France
3. Division of Materials Science, 50 Nanyang Avenue, Nanyang Technological University, Singapore 639798
4. Faculty of Light Industry and Chemical Engineering, Guang Dong University of Technology, Guang Dong 510006, China