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化学学报
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化学学报 ›› 1992, Vol. 50 ›› Issue (2): 139-144. 上一篇    下一篇

研究论文

卟啉化合物的研究 XIX: 四苯基卟啉Schiff碱的合成和卟啉蒽醌Schiff碱的光物理性质

黄素秋;李三军;陈琼;黄应军   

  1. 武汉大学化学系
  • 发布日期:1992-02-15

Study on porphyrin compounds XIX: Synthesis of tetraphenylporphyrin schiff bases and photophysical characterization

HUANG SUQIU;LI SANJUN;CHEN QIONG;HUANG YINGJUN   

  • Published:1992-02-15

PDF

446

被引次数

20

用Vilsmeier醛基化反应的中间物直接胺解制备四苯基卟啉Schiff碱, 测定了四苯基卟啉蒽醌Schiff碱(P-AQ)在光照和氩气氛中的可见光谱差谱(光-暗)和荧光光谱。对结果进行了讨论, 并用在光辐照下P-AQ分子构型变化来解释分子内电子转移生成P^+.-AQ^-. 离子自由基的稳定性。

关键词: 蒽醌 P, 席夫碱, 卟啉, 光物理性质, 醛基化反应

Syntheses of tetraphenylporphyrin Schiff bases and their Cu complexes by direct aminolysis of the intermediates of the Vilsmeier reaction are described. Fluorescence spectra (in benzene or DMF) and light-minus-dark optical difference spectrum (in CH2Cl2) of the synthesized I (P-AQ; R = a- and b-anthraquinonyl) were examined in Ar atomsphere The similarity in the optical difference spectrum of I and covalently linked porphyrin-benzoquinone implied the presence of a biradical ion pair P?-AQ?. Photoinduced intramol. electron transfer in a mol. of I might account for the enhanced fluorescence quenching. In fact, the fluorescence quenching for I is greater than for the mixture of P and AQ.

Key words: ANTHRAQUINONE P, SCHIFF BASE, PORPHYRIN

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