Room-Temperature Columnar Liquid Crystals from Twisted and Macrocyclic 9,9′-Bifluorenylidene Mesogen with Ambipolar Carrier Transport Properties

IF 5.7 Q2 CHEMISTRY, PHYSICAL

ACS Materials Au Pub Date : 2023-07-11 DOI:10.1021/acsmaterialsau.3c00030

Jinjia Xu*,

引用次数: 0

Abstract

We herein report the synthesis and characterization of a series of twisted and conjugated 9,9′-bifluorenylidene (BF) derivatives and a ladder-shaped cyclic dimer (CBF) bearing eight long alkoxy chains at peripheral positions. These contorted aromatics formed hexagonal columnar liquid crystalline mesophases over a wide temperature range, including room temperature. Ambipolar carrier transport properties with electron and hole mobility values of approximately 10^–4 and 10^–5 cm² V^–1 s^–1, respectively, were achieved for the BF derivatives forming a monodomain orientation at ambient temperature.

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具有双极性载流子输运性质的大环9,9′-双芴亚基扭曲介子室温柱状液晶

我们在此报道了一系列扭曲和共轭的9,9 ' -双氟苯基(BF)衍生物的合成和表征，以及在外围位置具有8个长烷氧基链的梯形环状二聚体(CBF)。这些扭曲的芳烃在很宽的温度范围内形成六方柱状液晶中间相，包括室温。在环境温度下形成单畴取向的BF导数获得了双极性载流子输运性质，电子和空穴迁移率分别约为10-4和10-5 cm2 V-1 s-1。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Materials Au 材料科学-

CiteScore

5.00

自引率

0.00%

发文量

期刊介绍： ACS Materials Au is an open access journal publishing letters articles reviews and perspectives describing high-quality research at the forefront of fundamental and applied research and at the interface between materials and other disciplines such as chemistry engineering and biology. Papers that showcase multidisciplinary and innovative materials research addressing global challenges are especially welcome. Areas of interest include but are not limited to:Design synthesis characterization and evaluation of forefront and emerging materialsUnderstanding structure property performance relationships and their underlying mechanismsDevelopment of materials for energy environmental biomedical electronic and catalytic applications