Synthesis and Hole Transport Properties of Highly Soluble Pyrene-Based Discotic Liquid Crystals with Trialkylsilylethynyl Groups
Synthesis and Hole Transport Properties of Highly Soluble Pyrene-Based Discotic Liquid Crystals with Trialkylsilylethynyl Groups
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DOI：
10.1080/15421406.2011.536485
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发表时间：
2011-01-01
影响因子：
0.7
通讯作者：
Yasutake, Mikio
中科院分区：
文献类型：
--
作者：
Hirose, Takuji;Shibano, Yuki;Yasutake, Mikio
制备了四种侧链含三烷基硅基乙炔基的芘基双炔化合物，并通过差示扫描量热法、偏光显微镜和X射线衍射对其进行了表征。所有的化合物都是高度可溶于有机溶剂，和两个化合物表现出柱状相，颜色，和其他的结晶。通过飞行时间（TOF）方法确定液晶相中的空穴传输能力为10- 2cm 2 V-1 s-1的量级，这是还未观察到的芘衍生物的最高空穴迁移率。
Four pyrene-based discotic compounds with trialkylsilylethynyl groups in the side chains were prepared and characterized by differential scanning calorimetry, polarizing optical microscopy, and X-ray diffraction measurements. All of the compounds were highly soluble in organic solvents, and two of the compounds exhibited a columnar phase, Colr, and the others were crystalline. The hole transport ability in the liquid-crystalline phases was determined by the time-of-flight (TOF) method to be on the order of 10-2cm2V-1s-1, the highest hole mobilities for pyrene derivatives yet observed.