1. Guizhou Provincial Key Laboratory of Computational Nano-Material Science Guizhou Education University Guiyang 550018 China
2. Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
3. Department of Physics Arizona State University Tempe AZ 85287 USA
4. Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education Tsinghua University Beijing 100084 China
5. Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China