物理化学学报 >> 2008, Vol. 24 >> Issue (01): 143-146.doi: 10.3866/PKU.WHXB20080125

研究简报 上一篇    下一篇

四苯基卟啉镁的合成、表征及光化学性质

张鹏燕; 张建斌; 于熙昌; 张凌伟; 魏雄辉   

  1. 北京大学化学与分子工程学院, 北京 100871; 内蒙古工业大学化工学院, 呼和浩特 010051; 北京博源恒升高科技有限公司, 北京 100080
  • 收稿日期:2007-07-20 修回日期:2007-10-09 发布日期:2008-01-05
  • 通讯作者: 魏雄辉 E-mail:xhwei@pku.edu.cn

Synthesis, Characterization and Photochemical Characteristic of Magnesium Tetraphenyl Porphyrin

ZHANG Peng-Yan; ZHANG Jian-Bin; YU Xi-Chang; ZHANG Ling-Wei; WEI Xiong-Hui   

  1. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China; College of Chemical Engineering, Inner Mongolia University of Technology, Huhhot 010051, P. R. China; Beijing Boyuan Hengsheng High-Technology Co., Ltd., Beijing 100080, P. R. China
  • Received:2007-07-20 Revised:2007-10-09 Published:2008-01-05
  • Contact: WEI Xiong-Hui E-mail:xhwei@pku.edu.cn

PDF

3637

赞

摘要： 提出一种以乙酸镁和乙酸钠为原料合成四苯基卟啉镁(MgTPP)的新方法, 合成样品以柱层析法进行分离纯化. 分离产物经UV-Vis、1H-NMR、MALDI-TOF-MS(基质辅助激光解吸电离飞行时间质谱)等技术表征, 确定为MgTPP. UV-Vis光谱分析结果表明, 四苯基卟啉镁的Soret 吸收带为424 nm, Q 吸收带为563 nm 和602 nm. 此外, 光照对MgTPP的二氯甲烷溶液光谱性质的影响结果表明, 经光照射后MgTPP的UV-Vis光谱的Soret吸收带吸收强度明显降低, 同时, 经550 nm的光激发产生的荧光有明显的猝灭. 对光照后的MgTPP样品进行MALDI-TOF-MS分析, 发现有新的质核比(m/z)出现, 其为668, 这一结果表明, 在光照条件下, MgTPP分子可能与氧分子发生光化学作用, 形成MgTPP与氧的复合物MgTPP-O2.

关键词: 四苯基卟啉镁； 减色效应； 结合氧

Abstract: A new synthetic way of magnesium tetraphenyl porphyrin (MgTPP) was presented, by which MgTPP was synthesized with tetraphenyl porphyrin and magnesium acetate, and purified by chromatography. The purified sample was confirmed as MgTPP by UV-Vis spectral method, 1H-NMR method, and matrix assisted laser desorption ionization time of filight mass spectrometry (MALDI-TOF-MS) method. The sample’s Soret band was shown at 424 nm, and Q band was shown at 563 nm and 602 nm in UV-Vis spectra. In addition, the spectral characters of MgTPP were studied after irradiating with incandescent light by UV-Vis spectral method and fluorescence spectral method. The results showed that the Soret band of MgTPP decreased remarkably with the increasing of irradiation time in the UV-Vis spectra, and fluorescence quenching was observed in the fluorescence spectra with 550 nm as excitation wavelength. Meanwhile, a new molecular ion peak 668 (m/z) in the MALDI-TOF-MS was shown, indicating that the coordinated complex of MgTPP-O2 may be formed by the photochemical interaction between MgTPP molecules and oxygen molecules under the illumination condition.

Key words: Magnesiumtetraphenyl porphyrin, Hypochromic effect, Linking oxygen