1. Department of Chemical and Biomolecular EngineeringNational University of Singapore 4 Engineering Drive 4 Singapore 117585 Singapore
2. Nanoscience and Nanotechnology Initiative (NUSNNI)‐NanocoreNational University of Singapore Singapore 117576 Singapore
3. State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive MaterialsMinistry of Education and College of Life SciencesNankai University Tianjin 300071 China