1. Department
of Physics, National University of Singapore, 2 Science Drive 3, 117542, Singapore
2. Singapore-Peking University Research Center for a Sustainable
Low-Carbon Future, 1 CREATE
Way, #15-01, CREATE Tower, 138602, Singapore
3. Center
for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
4. Department
of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
5. Science
Division, Yale-NUS College, 16 College Avenue West, 138527, Singapore
6. Department
of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
7. College
of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
8. Chinese
Education Ministry Key Laboratory of Resource Chemistry, Shanghai Normal University, Shanghai 200234, China
9. National University of Singapore (Suzhou) Research
Institute, 377 Linquan
Street, Suzhou Industrial Park, Suzhou, Jiangsu 215123, China