1. Frontiers Science Center for Transformative Molecules Center of Hydrogen Science, and School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 China
2. Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
3. NSLS‐II Brookhaven National Laboratory Upton NY 11973 USA
4. Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
5. Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 China