New Reactive Liquid-crystalline Poly(aminourethane)s and Their Metal-complexed Family
作者:Seiji Ujiie、Genichiro Shimada、Masanori Nata
DOI:10.1246/cl.140986
日期:2015.3.5
New liquid-crystalline poly(aminourethane)s (LCPU(T)) were synthesized by the polyaddition of a mesogenic diol and tolylene-2,4-diisocyanate. The mesogenic diol, containing an azobenzene group, formed a monotropic nematic phase in the narrow temperature region. LCPU(T) clearly exhibited a nematic phase on the heating and cooling processes. The fiber and film of LCPU(T) bended through trans–cis isomerization upon UV irradiation at room temperature. LCPU(T) formed a liquid-crystalline polymer–metal complex exhibiting a smectic A phase.
通过介晶二醇和甲苯-2,4-二异氰酸酯的加聚合成了新型液晶聚(氨基聚氨酯)(LCPU(T))。含有偶氮苯基团的介晶二醇在较窄的温度范围内形成单向向列相。 LCPU(T)在加热和冷却过程中清楚地表现出向列相。 LCPU(T)的纤维和薄膜在室温下紫外光照射下发生反式-顺式异构化弯曲。 LCPU(T)形成了呈现近晶A相的液晶聚合物-金属复合物。