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自从1934年,Robinowitch观察到了叶绿索的发光性质,Stern等人对卟啉类的电子光谱作了系统研究之后,卟啉类的发光越来越受到人们的重视。如所周知,自然界中广泛存在的叶绿素、人体内的氯化血红素、维生素B_(12)等都具有卟啉的基本骨架结构。鉴于卟啉类化合物在生物化学、药物(特别是抗癌药物)、表面活性剂、催化剂和发光材料等方面的应用价值,近年来该领域的研究仍十分活跃。本工作的目的是测定meso—四苯基卟啉(TPP)、meso—四—(4-N)吡啶基卟啉(TPyP)以其Cu(Ⅱ),Zn(Ⅱ)络合物,在氯仿溶液中的吸收光谱、荧光光踏。也测定了叶绿素-a(Chl-a)、脱镁叶绿素-a(Phn-a)、Cu(Ⅱ)与Zn(Ⅱ)置换的脱镁叶绿素-a(Cu-Phn-a与Zn-Phn-a)在丙酮溶液中的吸收光谱、荧光光谱。同时,测定了这些卟啉类化合物的固体试样的光电压谱。企图通过这种比较研究,寻找光电压谱和吸收光谱、荧光光谱之间的关系,分析过渡金属离子与卟啉环上π电子之间的强相互作用对电子能级的影响。
Since 1934, Robinowitch observed the luminescent properties of chlorophyll, Stern et al. Conducted a systematic study on the electronic spectra of porphyrins, and the luminescence of porphyrins has drawn more and more attention. As we all know, the widespread existence of chlorophyll in nature, the body of hemin, vitamin B_ (12) and so have the basic framework of porphyrin structure. In view of the application value of porphyrin compounds in biochemistry, drugs (especially anticancer drugs), surfactants, catalysts and luminescent materials, the research in this field is still very active in recent years. The purpose of this work is to determine the meso-tetraphenylporphyrin (TPP), meso-tetrakis- (4-N) pyridylporphyrin (TPyP) Absorption spectrum in solution, fluorescent light tread. The contents of pheophytin-a (Cu-Phn-a and Zn-Phn-a) substituted by Chl-a and Phe- a) Absorption spectrum, fluorescence spectrum in acetone solution. At the same time, the voltage spectra of these porphyrin-based solid samples were measured. Through this comparative study, the author attempts to find out the relationship between the photo-voltage spectrum, the absorption spectrum and the fluorescence spectrum, and analyze the influence of the strong interaction between the transition metal ions and π electrons on the porphyrin ring on the electron energy level.