Center for Nanochemistry;
Beijing Science and Engineering Center for Nanocarbons;
Beijing National Laboratory for Molecular Sciences;
College of Chemistry and Molecular Engineering;
Peking University;
Beijing 100871;
China;
Beijing Graphene Institute;
Beijing 100095;
China;
Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education;
Department of Chemistry;
Tsinghua University;
Beijing 100084;
China;