A new class of polycyclic heteroarenes based on benzo[3,4]phenanthro[1,2-b]benzo[3,4]phenanthro[2,1-d]thiophene (BPBPT) was prepared from polyaryl thiophenes via regioselective Scholl reactions. The molecular frameworks of these compounds exhibited twisted bridges and near-cofacial packing motifs with oppositely or parallel π-stacked structures depending on the substituents on the periphery. Theoretical calculation of electronic coupling and charge mobility was carried out on the basis of the single-crystal structures. Single crystals of selected benzophenanthrothiophenes were used in p-channel field-effect transistor device fabrication, from which the highest mobility was measured as 2.03 cm² V^–1 s^–1 from Flu-BPBPT.

中文翻译：

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苯并噻吩并噻吩：合成，晶体结构和性质

由聚芳基噻吩经区域选择性Scholl反应制备了基于苯并[3,4]菲基[1,2- b ]苯并[3,4]菲基[ 2,1- d ]噻吩（BPBPT）的新型多环杂芳烃。这些化合物的分子骨架表现出扭曲的桥和接近表面的堆积基序，取决于外围的取代基，它们具有相反或平行的π-堆叠结构。在单晶结构的基础上进行了电子耦合和电荷迁移率的理论计算。在p沟道场效应晶体管器件的制造中使用了选定的二苯并菲并噻吩的单晶，据此测得其最高迁移率为2.03 cm ² V^–1 s ^–1来自Flu-BPBPT。