Acta Chimica Sinica ›› 2003, Vol. 61 ›› Issue (10): 1627-1634. Previous Articles     Next Articles

Original Articles

具有不同芳氧基取代酞菁钯聚集行为研究

谢文委;徐海涛;潘忠孝;阎天堂;彭必先   

  1. 中国科学技术大学化学系;中国科学院理化技术研究所
  • 发布日期:2003-10-15

Study on Aggregation Behavior of Tetraphenoxyphthalocyaninatopallidi um with Different Phenoxy-substituents

Xie Wenwei;Xu Haitao;Pan Zhongxiao;Yan Tiantang;Peng Bixian   

  1. Department of Chemistry, University of Science & Technology of China;Technique Institute of Physics and Chemistry, Chinese Academy of Sciences
  • Published:2003-10-15

In order to study the aggregation behavior of phthalocyanines with different phenoxy-substituents, five tetraphenoxyphthalocyaninatopalli dium with different phenoxy substituents (e.g. 2, 4- dichlorophenoxy, Pel; phenoxy, Pc2; 2, 4-dibutylphenoxy, Pc3; 2, 5- dibutylphenoxy, Pc4; 2,6-dibromo-4-methylphenoxy, Pc5) were synthesized. The aggregation degree is dependent on the properties of the phenoxy-substituents. The dimerization constants of Pel ~ 5 in THF with concentration of 10~(-6) ~ 10~(-5) mol·L~(-1) were obtained by calculation, giving 1.61 * 10~5 mol~(-1)·dm~3, 3.87 * 10~5 mol~(-1) ·dm~3, 2.60 * 10~5 mol~(-1)·dm~3, 1.21 * 10~5 mol~(-1)·dm~3 and 2.57 * 10~5 mol~(-1)·dm~3, respectively. There are similar absorption spectra of the monomer and the corresponding dimmer for all the compounds except Pel. The effect of substituents on the absorption spectra of the thin solid film is diversity with respect to the different substituents. By comparing the absorption spectra in the solution with those in the solid film, large differences can be observed in which spectrum shape is mostly changed for Pcl and λ_(max) was mostly shifted for Pc5.

Key words: PHTHALOCYANINE, AGGREGALES, ABSORPTION SPECTROMETRY, TETRAHYDROFURAN

CLC Number: