1. Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Joint International Research Laboratory of Carbon‐Based Functional Materials and Devices Soochow University Suzhou Jiangsu 215123 P. R. China
2. Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Department of Chemistry Wuhan University Wuhan 430072 P. R. China
3. Cavendish Laboratory University of Cambridge JJ Thomson Avenue Cambridge CB3 0HE UK
4. Univ Rennes CNRS ISCR‐UMR 6226 Rennes 35000 France
5. Institute of Organic Optoelectronics Jiangsu Industrial Technology Research Institute (JITRI) Suzhou Jiangsu 215211 P. R. China