Fluorinated triphenylenes and a path to short tailed discotic liquid crystals: synthesis, structure and transport properties

Fluorinated triphenylenes and a path to short tailed discotic liquid crystals: synthesis, structure and transport properties
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氟化苯并菲和短尾盘状液晶的途径:合成、结构和传输特性

DOI:
10.1039/d1ma00606a
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发表时间:
2022
期刊:
影响因子:
5
通讯作者:
Twieg, Robert J.
Twieg, Robert J.
中科院分区:
--
文献类型:
--
作者:
Li, Zhe;Powers, Mitchell;Ivey, Kayla;Adas, Sonya;Ellman, Brett;Bunge, Scott D.;Twieg, Robert J.

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介绍了一种合成含氟烷氧基苯并菲双嵌段液晶的新方法。该方法利用了先前描述的光环脱氢酶(PCDHF)反应用于制备氟化苯并菲衍生物,该反应与各种亲核芳族取代(SNAr)反应相结合。这种特殊的反应组合提供了一种多用途的方法来分散具有仔细控制的核心氟和烷氧基尾部含量的材料。在这些研究的过程中,发现了具有最小尾部含量的新的分散材料。报道了这些材料的介晶性质,并使用飞行时间技术测量了它们的电荷传输性质。
A new synthetic approach for fluorinated alkoxytriphenylene discotic liquid crystals is presented. This methodology exploits the previously described photocyclodehydrofluorination (PCDHF) reaction for the preparation of fluorinated triphenylene derivatives coupled with a variety of nucleophilic aromatic substitution (SNAr) reactions. This particular combination of reactions provides a versatile route to discotic materials with carefully controlled core fluorine and alkoxy tail content. In the course of these studies, new discotic materials with minimal tail content have been revealed. The mesogenic properties of these materials are reported, and their charge transport properties are measured using the time of flight technique.
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