含碲唑杂环部花青的性能研究  

Studies on the Properties of Merocyanines Containing Benzotellurazoles

作　　者：罗学红[1] 刘秀芳[1] 徐汉生[1] 

机构地区：[1]武汉大学化学系

出　　处：《有机化学》1996年第6期552-556,共5页Chinese Journal of Organic Chemistry

基　　金：国家自然科学基金

摘　　要：本文报道了由新型杂环苯并碲唑衍生的4个染料中间体以及三种类型共6个部花青。染料合成的条件依酸性酮亚甲基核而异。研究了染料吸收光谱的溶剂效应,发现极性较弱的罗丹宁部花青随着溶剂极性增大呈现吸收峰的显著红移,而极性较强的双甲酮及巴比妥酸部花青的吸收则显示一定程度的蓝移。利用共振理论解释了上述现象。同时发现具有相似溶剂效应的两种部花青的转移能量(E_T)图呈现很好的线性关系,有可能用作溶剂极性的指示剂。Four intermediates and six merocyanine dyes containing benzotellurazoles were described. The synthetic conditions were dependent on different acidities of ketomethylene nuclei. The solvent effects on absorption spectra of the dyes were investigated and the different solve ' effects for different types of merocyanines were explained by resonance theory. The characteristics of the above dyes as solvent polarity indicator were also evaluated.

关 键 词：苯并碲唑 部花青 菁染料 合成 

分 类 号：TQ614.4[化学工程—精细化工]