1. Centre for Biomimetic Sensor Science, Nanyang Technological University, 637553 Singapore, Singapore
2. School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore, Singapore
3. Department of Chemistry, Izmir Institute of Technology, Urla, 35430 Izmir, Turkey
4. Lee Kong Chian School of Medicine, Nanyang Technological University, 308232 Singapore, Singapore