Synthesis of 2,3′,4′-tricyanobiphenyl derivatives and tetraphenylphthalocyanines based thereon
摘要:
The nitration of 2,3',4'-tricyanobiphenyl with subsequent transformations of the obtained product provided 4-X-2,3',4'-tricyanobiphenyls (X = NO(2), NH(2), NHCOCH(3), Br, I). The condensation of the initial biphenyl or its 4-X-derivatives (X = NO(2), NHCOCH(3), Br, I) in the presence of zinc acetate afforded the corresponding zinc complexes of tetra(4-X-2-cyanophenyl)phthalocyanines.
Synthesis of 2,3′,4′-tricyanobiphenyl derivatives and tetraphenylphthalocyanines based thereon
摘要:
The nitration of 2,3',4'-tricyanobiphenyl with subsequent transformations of the obtained product provided 4-X-2,3',4'-tricyanobiphenyls (X = NO(2), NH(2), NHCOCH(3), Br, I). The condensation of the initial biphenyl or its 4-X-derivatives (X = NO(2), NHCOCH(3), Br, I) in the presence of zinc acetate afforded the corresponding zinc complexes of tetra(4-X-2-cyanophenyl)phthalocyanines.
Abstract Phasetransitions in a glassy film of 4-((4-(dibutylamino)phenyl)diazenyl)-biphenyl-2,3′,4′-tricarbonitrile was initiated by a monochromatic X-ray microbeam with λ = 0.71 A (MoKα). At the site of the film that was directly impacted by irradiation noticeable morphological changes immediately occurred with subsequent crystal formation. From the site of irradiation, the front of transition of the
摘要 4-((4-(二丁基氨基)苯基)二氮烯基)-联苯-2,3',4'-三甲腈玻璃膜中的相变由λ = 0.71 A (MoKα)的单色X射线微束引发. 在直接受辐照影响的薄膜部位,立即发生明显的形态变化,随后形成晶体。从照射部位开始,玻璃膜转变为液晶相的前沿向各个方向各向同性传播。这种现象在通过加热偶氮化合物直至熔化并冷却至室温而制备的膜中可重现并清楚地观察到。这些结果突出了一个事实,即 X 射线可用作刺激玻璃态偶氮化合物相变的工具,这也可能带来新的和意想不到的发现。