1. HKUST-Shenzhen Research Institute, No.
9 Yuexing first RD, South Area, Hi-tech Park, Nanshan, Shenzhen 518057, China
2. Department
of Chemistry, Division of Life Science, State Key Laboratory of Molecular
Neuroscience, Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
3. Department
of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hong Kong, China
4. Guangdong
Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State
Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China