Regiospecific: N-alkyl substitution tunes the molecular packing of high-performance non-fullerene acceptors

Feng Qi, Leighton O. Jones, Kui Jiang, Sei Hum Jang, Werner Kaminsky, Jiyeon Oh, Hongna Zhang, Zongwei Cai, Changduk Yang, Kevin L. Kohlstedt, George C. Schatz, Francis R. Lin^*, Tobin J. Marks^*, Alex K.Y. Jen^*