L-谷氨酸桥连的卟啉二联体配体及其铜配合物的合成、表征和性质研究

合成了未见报道的L-谷氨酸桥连的卟啉二联体配体及其铜的金属配合物, 并用红外光谱, 电子吸收光谱, 核磁氢谱, 元素分析和质谱等对化合物的结构加以确认, 研究了配体和金属配合物的CD, 拉曼光谱和荧光光谱的变化. 结果显示在配体中没有出现劈裂的Cotton效应, 而铜配合物中出现了劈裂的正负Cotton效应, 配体的荧光强度强于铜配合物的荧光强度, 在拉曼光谱中, 由于卟啉分子平面的对称性由D_2h变为D_4h群及其铜离子d轨道的电子效应, 在卟啉配体和铜配合物之间的拉曼光谱有很大差别.

Preparation, Characterization and Properties of the Porphyrin Dimer Ligand and Copper Complex by the Bridge of L-Glutamic Acid

In the paper, the new porphyrin dimer ligand and copper complex were synthesized directly by the bridge of L-glutamic acid, with their structure confirmed by the mass spectra (FAB), FT-IR spectra, ele- mental analysis, UV-Vis spectra and so on. The CD spectra, Raman spectra and fluorescence spectra of the porphyrin ligand and copper complex were investigated, and the results showed that there was no split cotton effect in the CD spectra of the ligand, however, there was negative and positive Cotton effect in the CD spectra of the copper complex, the fluorescence intensity of ligand was stronger than that of the copper com- plex in the fluorescence spectra, while in the Raman, there was great difference between the dimer ligand and the copper complex due to changes of the symmetry of porphyrin plane and electron effect of the d or- bits of the copper ion.