材料科学
共价键
半导体
扭转(腹足类)
晶体管
光电子学
有机半导体
Crystal(编程语言)
电压
电气工程
有机化学
医学
化学
外科
计算机科学
程序设计语言
工程类
作者
Lei Zheng,Zhengsheng Qin,Z. Q. Liu,Jinfeng Li,Yongxu Hu,Yajing Sun,Jie Li,Xiaotao Zhang,Kailiang Zhang,Huanli Dong,Liqiang Li,Wenping Hu
标识
DOI:10.1021/acsami.4c05219
摘要
High-mobility and color-tunable highly emissive organic semiconductors (OSCs) are highly promising for various optoelectronic device applications and novel structure-property relationship investigations. However, such OSCs have never been reported because of the great trade-off between mobility, emission color, and emission efficiency. Here, we report a novel strategy of molecular conformation-induced unique crystalline polymorphism to realize the high mobility and color-tunable high emission in a novel OSC, 2,7-di(anthracen-2-yl) naphthalene (2,7-DAN). Interestingly, 2,7-DAN has unique crystalline polymorphism, which has an almost identical packing motif but slightly different molecular conformation enabled by the small bond rotation angle variation between anthracene and naphthalene units. More remarkably, the subtle covalent bond rotation angle change leads to a big change in color emission (from blue to green) but does not significantly modify the mobility and emission efficiency. The carrier mobility of 2,7-DAN crystals can reach up to a reliable 17 cm
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