有机化学 ›› 2011, Vol. 31 ›› Issue (03): 356-361. 上一篇    下一篇

研究论文

β-位取代卟啉镍衍生物的合成及其物性研究

万中全1,贾春阳*,1,张家强1,李孜1,王志红1,张关心2   

  1. (1电子科技大学电子薄膜与集成器件国家重点实验室 微电子与固体电子学院 成都 610054)
    (2中国科学院化学研究所 北京 100190)
  • 收稿日期:2010-07-10 修回日期:2010-11-05 发布日期:2010-11-18
  • 通讯作者: 贾春阳 E-mail:cyjia@uestc.edu.cn

Synthesis and Physical Properties of β-Substituted Porphyrin Nickel(II) Derivatives

Wan Zhongquan1 Jia Chunyang*,1 Zhang Jiaqiang1 Li Zi1 Wang Zhihong1 Zhang Guanxin2   

  1. (1 State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054)
    (2 Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190)
  • Received:2010-07-10 Revised:2010-11-05 Published:2010-11-18

合成了5,10,15,20-四(对癸烷氧苯基)-β-硝基卟啉镍(1)以及5,10,15,20-四(对癸烷氧苯基)-6 -硝基喹喔啉[2,3-b ]卟啉镍(2), 并通过核磁共振氢谱、红外光谱、质谱、元素分析等分析方法表征了它们的结构. 由于β-位的取代, 不但使化合物12的最大吸收较5,10,15,20-四(对癸烷氧苯基)卟啉镍(3)发生了红移, 而且化合物12的第一氧化电位均大于化合物3. 利用差示扫描量热法(DSC)研究了化合物12的液晶行为, 结果表明: 只有化合物1具有液晶性, 其液晶行为表现为升温单变液晶, 液晶相变温度始于77 ℃, 相变区间为41 ℃. 通过原子力显微镜(AFM)观察化合物12在硅基底上自组装薄膜的形貌, 结果表明: 化合物1的成膜性和有序性更好. 利用密度泛函理论研究化合物12的优化几何构型与前线轨道分布, 其结果与紫外可见光谱, DSC, AFM的结果一致.

关键词: 卟啉, 循环伏安, 液晶, 自组装, 密度泛函理论

[5,10,15,20-Tetrakis(4-decaneoxyphenyl)-β-nitro-porphyrinato]nickel(II) (1) and {5,10,15,20- tetrakis(4-decaneoxypheny1)-6 -nitroquinoxalino[2,3-b ]porphyrinato}nickel(II) (2) are synthesized and confirmed by 1H NMR, infrared spectroscopy, mass spectrometry (MS), and elemental analysis. The first oxidation potentials of 1 and 2 are positive-shifted and the maximum absorptions of 1 and 2 are red-shifted compare with those of starting compound 3. Differential scanning calorimetry (DSC) results show that only compound 1 possesses liquid crystal property, which behaves the heating monotropic liquid crystal. The self-assembly films of the compounds on Si are studied by atomic force microscopy (AFM), the self-assembly film of 1 is better ordered compared with that of 2. These results indicate that the different physical properties of compounds 1 and 2 are mainly due to their different β-substituted groups. The observed electronic properties are explained by calculated results based on density functional theory (DFT).

Key words: porphyrin, cyclic voltammetry, liquid crystal, self-assembly, density functional theory (DFT)