Synthesis and characterization of a triazine containing three phthalocyanines
摘要:
A new trimeric-s-triazine containing three amino zinc(II) phthalocyanines has been prepared by following the multistep reactions of unsymmetrical substituted phthalocyanines. The zinc(II) phthalocyanine containing an unsymmetrical substituted nitro group was synthesized by means of the well-known statistically mixing method of two different plithalonitriles. 4-Nitrophthalonitrile and 4,5-bis(hexylthio)phthalonitrile were tetramerized in DMF in the presence of zinc acetate at elevated temperature to give a zinc(II) complex, which was then separated by column chromatography on silica gel. The nitro compound was reduced to the amine form by using sodium sulfide as the reducing agent and its ammonium salt was obtained by reaction with gaseous HCl. This compound was then reacted with cyanuric chloride in the presence of potassium carbonate as a base in THF and an interesting trimeric-s-triazine, containing three amino zinc(II) phthalocyanines, was synthesized. The separation of the product was carried out by column chromatography on silica gel. The new compounds were characterized by elemental analysis and UV/VIS, IR, NMR spectra. (C) 2003 Elsevier Science Ltd. All rights reserved.
在这项研究中,已通过两个步骤合成了超分子八元邻苯二甲酸酞菁-diCo(II)hexakis-Zn(II)。以四氰基二苯并(1,4,7,10-四硫杂-(12-冠))(1)和4-硝基-1,2-二氰基苯(2)为原料,合成了硝基取代的二聚酞菁(3)。化合物3与不对称的Zn(II)酞菁(4)反应以通过偶氮桥(5)提供具有六个Zn(II)酞菁的Co(II)二聚体的超分子组装体。通过将6与二茂铁基醛缩合,获得具有六个二茂铁基(7)的Co(II)二聚酞菁。化合物3,5,6和7通过元素分析,ICP-MS,IR,UV-Vis和1 H NMR光谱进行了表征。通过阻抗光谱和直流电导率测量随温度的变化研究了化合物薄膜的电子性能。交流电导率找到具有频率,以改变ω作为ω š与索引小号 ⩽1,表明一跳跃传导机构3和6。而对于5则观察到频率无关的电导率。发现通过不对称硝基将硝基还原成胺和偶氮偶合可增加电导率。5的较高电导率