Two novel porphyrin liquid crystals were designed and synthesized. Their structures were characterized by NMR, FT-IR, UV-visible, and mass spectroscopies. The liquid crystalline properties were investigated by DSC, POM and XRD analyses. The C${}_{12}$ and C${}_{18}$ alkyl chains porphyrin iron(III) complex (1-2) displayed three liquid crystalline transitions in a wide temperature range. Both long alkyl chain porphyrin iron(III) complexes were exhibited a columnar mesophase type.

中文翻译：

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不同烷基链长度卟啉氯化铁配合物的液晶行为

设计并合成了两种新型卟啉液晶。它们的结构通过核磁共振、傅立叶变换红外光谱、紫外可见光谱和质谱进行了表征。通过 DSC、POM 和 XRD 分析研究了液晶性能。C${}_{12}$和C${}_{18}$烷基链卟啉铁(III)络合物( 1-2 )在较宽的温度范围内表现出三种液晶转变。两种长烷基链卟啉铁(III)配合物均表现出柱状中间相类型。