(E,E)-3,6-Bis(styryl)pyridazines (3a–t) bearing 2, 4 or 6 alkoxy chains were prepared by applying the Siegrist reaction of 3,6-dimethylpyridazine (13) and the corresponding azomethines 10a–t. The transversal dipole moment of these calamitic compounds effects an extremely high tendency for self-organization in thermotropic LC phases (N, S_A, S_B, S_C, S_E, S_I/F, and Cub). The conjugated core structure represents moreover a chromophore with a high photosensitivity for (E,E)⇄(E,Z) isomerization reactions: this property makes the compounds interesting for optical imaging and switching techniques.

中文翻译：

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烷氧基取代的（E，E）-3,6-双（苯乙烯基）哒嗪-液晶的光敏液晶元

（ê，ê）-3,6-双（苯乙烯基）哒嗪（3A -吨）轴承2，通过应用3,6-二甲基- （的西格里斯特反应制备4个或6烷氧基链13）和相应的偶氮甲碱10A - Ť。在热致LC相（N，S _A，S _B，S _C，S _E，S _{I / F}和Cub）中，这些cal族化合物的横向偶极矩影响自组织的极高趋势。此外，共轭核心结构代表了对（E，E）⇄（E，Z）异构化反应：该性质使化合物对于光学成像和转换技术很感兴趣。