Liquid crystalline and charge transport properties of double-decker cerium phthalocyanine complexes
Liquid crystalline and charge transport properties of double-decker cerium phthalocyanine complexes
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DOI：
10.1039/b616848p
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发表时间：
2007-06
影响因子：
--
通讯作者：
Fabien Nekelson;H. Monobe;M. Shiro;Y. Shimizu
中科院分区：
文献类型：
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作者：
Fabien Nekelson;H. Monobe;M. Shiro;Y. Shimizu
合成了一系列新的硫烷基化双层铈酞菁配合物[（CnH2n+1S）8Pc]2Ce，并通过DSC、偏光显微镜和X射线衍射对其介晶性进行了表征。与其他镧系酞菁不同，这些双层铈化合物通过光谱学和X射线晶体学被发现是中性配合物。六方柱状中间相（Colh）表现出的所有同系物之前熔化的各向同性液体。有趣的是，这些化合物的柱状中间相在未处理的玻璃基板或ITO涂覆的玻璃上显示出自发垂面配向的强烈趋势。在长链同系物的Colh中间相中，通过TOF技术成功测量出空穴迁移率为7 × 10−3 cm 2 V−1 s−1。
A homologous series of new thioalkylated double-decker cerium phthalocyanine complexes, [(CnH2n+1S)8Pc]2Ce, were synthesised and their mesomorphisms were clarified by DSC, polarized optical microscopy and X-ray diffraction. Unlike other lanthanide phthalocyanines, these double-decker cerium compounds were found by spectroscopy and X-ray crystallography to be neutral complexes. A hexagonal columnar mesophase (Colh) was exhibited by all homologues prior to melting to the isotropic liquid. Interestingly, the columnar mesophases of these compounds showed strong tendencies for spontaneous homeotropic alignment on non-treated glass substrates or ITO coated glass. The hole mobility in the Colh mesophase of the longer chain homologue was successfully measured by a TOF technique as having a value of 7 × 10−3 cm2 V−1 s−1.