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化学学报
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化学学报 ›› 2006, Vol. 64 ›› Issue (19): 2020-2026. 上一篇    下一篇

研究论文

μ-氧-双[meso-四(对烷氧基苯基)卟啉合铁(III)]的合成、表征和液晶性

赵鸿斌*,1,2, 罗和安1, 徐勇军2, 周宁1, 宋欣荣1, 刘捷频1, 曹华1   

  1. (1湘潭大学化学化工学院 湘潭 411105)
    (2东莞理工学院化学生物工程系 东莞 523808)
  • 投稿日期:2005-10-18 修回日期:2006-04-13 发布日期:2006-10-14
  • 通讯作者: 赵鸿斌

Synthesis, Characterization and Liquid Crystalline Properties of (μ-Oxo)bis[meso-tetrakis(4-alkoxyphenyl)porphyrin Iron(III)]

ZHAO Hong-Bin*,1,2; LUO He-An1; XU Yong-Jun2; ZHOU Ning1; SONG Xin-Rong1; LIU Jie-Pin1; CAO Hua1   

  1. (1 College of Chemistry and Chemical Engineering, Xiangtan University, Xiangtan 411105)
    (2 Faculty of Chemical Biotechnology, Dongguan University of Technology, Dongguan 523808)
  • Received:2005-10-18 Revised:2006-04-13 Published:2006-10-14
  • Contact: ZHAO Hong-Bin

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设计合成了未见文献报道的μ-氧-双[meso-四(对烷氧基苯基)卟啉合铁(III)]配合物9个, 研究了其合成、分离、纯化方法, 用MS, 1H NMR, IR, UV, 元素分析等方法剖析确证了目标化合物的结构, 其结构我们认为是μ-氧桥联的二聚体结构, 且存在两种典型空间构象结构(重叠式和交叉式), 表现为同一系列化合物存在四类1H NMR谱. 用差示扫描量热仪和偏光显微镜研究了这9个化合物的液晶性, 发现9个化合物均具有液晶性, 多为升温降温互变液晶, 具有丝状光学织构. 有一至三个中介相, 相变起始温度最低为－6 ℃, 最高为210 ℃; 相变区间最宽为301 ℃, 最窄为50 ℃; 清亮点(Tc)最高315 ℃, 最低147 ℃. 考察了烷氧基链长、配位金属离子及配合物分子空间结构对液晶性能的影响. 我们认为这种μ-氧桥联的二聚体结构比单层平面卟啉及其金属配合物具有更好的液晶性.

关键词: 卟啉铁配合物, 合成, 波谱解析, 液晶性

A series of novel (μ-oxo)bis[meso-tetrakis(4-alkoxyphenyl)porphyrin iron (III)] were synthesized. Molecular structures of all synthesized compounds were confirmed by IR, UV, 1H NMR, MS and elemental analysis. Differential scanning calorimetry and polarizing microscope (PM) were used to probe the liquid crystal properties of the serial compounds. Nine compounds were found to exhibit liquid crystal (LC) properties. Most of them were enantiotropic liquid crystals. Under PM, the LC texture was observed and filamentary optical one was displayed. The effects of alkoxy chains, metal ions of complexes and molecular space structure on liquid crystal properties have been investigated.

Key words: ferriporphyrin, synthesis, characterization, liquid crystal property