论文部分内容阅读
通过轴向配位反应,将四苯基卟啉锌(ZnTPP)键合在4-乙烯基吡啶(4VP)与苯乙烯(St)共聚物P(4VP-co-St)的侧链,制得了卟啉功能化的大分子ZnTPP-P(4VP-co-St).通过FTIR与1H-NMR对其化学结构进行了表征,重点研究了时间、温度对轴配过程的影响,以及大分子轴配化合物ZnTPP-P(4VP-co-St)的谱学性能,对其光物理行为进行了较为深入的分析.研究结果表明,以共聚物P(4VP-co-St)的吡啶侧基为配体,通过轴向配位反应可顺利地制备卟啉功能化的大分子ZnTPP-P(4VP-co-St),且温度越低,键合量越大.该大分子具有类似于ZnTPP的特征电子吸收光谱与荧光发射光谱,同时也显示出轴向配位的特征.与小分子ZnTPP相比,ZnTPP-P(4VP-co-St)的吸收光谱和发射光谱都发生了明显的红移.大分子轴配化合物ZnTPP-P(4VP-co-St)的光物理行为也呈现出一定程度的高分子效应,随着大分子链中ZnTPP键合量的增大,相近的ZnTPP侧链单元之间会发生能量转移,使荧光发射强度有所减弱.
Tetraphenylporphyrin zinc (ZnTPP) was bonded to the side chain of 4-vinylpyridine (4VP) and styrene (St) copolymer P (4VP-co-St) by axial coordination reaction, Porphyrin-functionalized macromolecule ZnTPP-P (4VP-co-St). Its chemical structure was characterized by FTIR and 1H-NMR. The effects of time and temperature on the process of axial distribution were investigated. The photophysical behavior of the compound ZnTPP-P (4VP-co-St) has been studied in detail.The results show that the pyridine side of the copolymer P (4VP-co-St) , The porphyrin-functionalized macromolecule ZnTPP-P (4VP-co-St) can be smoothly prepared by the axial coordination reaction, and the lower the temperature is, the larger the bonding amount is. The macromolecule has characteristic electrons similar to ZnTPP Absorption spectrum and fluorescence emission spectrum of the ZnTPP-P (4VP-co-St), as well as the axial coordination characteristics. Compared with the small molecule ZnTPP, the absorption and emission spectra of ZnTPP-P The photophysical behavior of ZnTPP-P (4VP-co-St) also showed a certain degree of polymer effect. As the amount of ZnTPP in the macromolecular chains increased, Energy transfer, fluorescence emission intensity weakened.