1. Beijing
National Laboratory for Molecular Science, Key Laboratory of Organic
Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
2. University of Chinese Academy of Sciences, Beijing 100049, P. R. China
3. Key
Laboratory of Bio-Inspired Smart Interfacial Science and Technology
of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy
Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191, P. R. China
4. Heeger
Beijing Research and Development Center, International Research Institute
for Multidisciplinary Science, Beihang University, Beijing 100191, P. R. China