Tristriazolotriazines with Azobenzene Arms ‐ Acidochromic Dyes and Discotic Liquid Crystals
Tristriazolotriazines with Azobenzene Arms ‐ Acidochromic Dyes and Discotic Liquid Crystals
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DOI：
10.1002/ejoc.201900665
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发表时间：
2019-08
影响因子：
2.8
通讯作者：
Marcel Sperner;Natalie Tober;H. Detert
中科院分区：
文献类型：
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作者：
Marcel Sperner;Natalie Tober;H. Detert
以相应的芳基四氮唑和三聚氰酸氯为原料，合成了具有偶氮苯取代和外围烷氧基或烷基氨基链的三氮杂三氮类化合物。这些星形染料是高度酸性变色的。烷氧基取代允许可逆的顺式光开关。具有3，4-二烷氧基取代的化合物是盘状液晶，形成广泛而稳定的热致中间相。用差示扫描量热法和偏光显微镜研究了其热行为。
Tristriazolotriazines with azobenzene substitution and peripheral alkoxy‐ or alkylamino chains were prepared from the corresponding aryltetrazoles and cyanuric chloride. These star‐shaped dyes are highly acidochromic. Alkoxy‐substitution allows reversibletrans‐cisphotoswitching. Compounds with a 3,4‐dialkoxy substitution are discotic liquid crystals that form broad and stable thermotropic mesophases. The thermal behavior was studied by DSC and polarizing optical microscopy.