1. Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of Sciences Beijing 100190 China
2. School of Chemical SciencesUniversity of Chinese Academy of Sciences Beijing 100049 China
3. School of Chemistry and Chemical Engineering Center for Advanced Electronic Materials and DevicesShanghai Jiao Tong University Shanghai 200240 P. R. China
4. Department of ChemistryZhejiang University Hangzhou 310027 China