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Synthesis, Structure, and Charge Transport Properties of Asymmetric 5H-Benzo[b]carbazoles
Yidan Chen1, Tao Jin2, Jiqiang Xu1
1School of Chemistry and Chemical Engineering, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, 111 Jiulong Road, Hefei, Anhui 230093, China.
Abstract:
5H-Benzo[b]carbazole (BCZ) and its functionalized derivatives (2PBCZ and 3PBCZ) are designed and synthesized, which have phenyl substituents selectively introduced at different positions. Single-crystal structure analysis and theoretical calculations reveal that the most twisted molecule 2PBCZ surprisingly possesses the most efficient two-dimensional electronic couplings, although they all form herringbone packing structures. Their charge transport properties in OFETs are investigated for the first time, and 2PBCZ shows superior hole mobilities up to 0.47 cm2 V-1 s-1.
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