AUTHOR=Dai Zhicheng , Ai Taotao , Zhou Qixin , Zhang Haichang TITLE=Editorial: Design, Synthesis, and Application of Novel π-Conjugated Materials—Part Ⅱ JOURNAL=Frontiers in Chemistry VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2021.771438 DOI=10.3389/fchem.2021.771438 ISSN=2296-2646