1. Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of Chemistry School of Sciences Tianjin University No. 92#, Weijin Road Tianjin 300072 China
2. School of Materials Science and Engineering Nanyang Technological University 639798 Singapore Singapur
3. Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China