摘要
金属卟啉在光合作用中起重要作用,合成其聚合物并作为光合作用模拟体系研究其能量转移和电子转移过程,已成为化学领域的重要研究课题之一.用于光合作用活性中心模拟体的金属卟啉聚合物种类很多,本文参考Little方法合成2种未见报道的苯环上分别带推电子和拉电子取代基和以柔韧碳氢链相连的中位双卟啉p-ZnTPP/p-H_2TMPP和p-ZnTPP/p-H_2TCPP(图1)。
Two new zinc-metal-free bis-porphyrin dimers linked by a flexible alkoxy chain were synthesized. Their absorption spectra and steady-state fluorescence spectra show the existence of intramolecular energy transfer processes in these porphyrin dimers and the efficiency of the intramolecular energy transfer of the porphyrin dinner with electron-donating substituents at .meso-po-sition of phenyl of metal-free porphyrin is greater than that of the dimer with electron-withdrawing substituentes. It seems that the porphyrin dimer with a -OCH3 group at weso-position of phenyl of porphyrin is a better model of biological photosynthetic reaction.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1992年第1期115-116,共2页
Chemical Journal of Chinese Universities
基金
中山大学科学研究基金
关键词
双卟啉
分子内能量转移
荧光光谱
Porphyrin dimer, Intramolecular energy transfer, Fluorescence spectra
