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Porphyrin-Bodipy combination: synthesis, characterization and antenna effect

机译:卟啉-双联吡啶的合成,表征和天线效应

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This paper described the synthesis of multichromophoric and pi-conjugated macromolecules consisting of two equal Bodipy units and one porphyrin unit (free base). Then, a zinc(II) complex of this macromolecule based on Bodipy and porphyrin was prepared by a classical complex reaction. The formation of nitroporphyrin, aminoporphyrin, Bodipy-porphyrin (PB) and Bodipy-metalloporphyrin (Zn-PB) was confirmed by H-1-NMR, C-13-NMR, elemental analysis, UV-vis/fluorescence spectra, melting point and ESI-TOF-MS techniques. Moreover, the photophysical properties of chromophoric groups such as absorption, emission and quantum yields were investigated for the photoinduced energy transfer in three different organic solvents. The result indicated that the emission of Bodipy in the Bodipy-porphyrin combination was significantly quenched with the formation of the free base and zinc(II) complex of porphyrin. Efficient energy transfer from the Bodipy unit to the porphyrins (free base or Zn-chelate) was observed between 88% and 96% due to high pi-conjugation. The energy transfer also occurred from Bodipy to porphyrin though the high polarity of acetonitrile.
机译:本文描述了由两个相等的Bodipy单元和一个卟啉单元(游离碱)组成的多发色和π共轭大分子的合成。然后,通过经典的络合反应制备了基于Bodipy和卟啉的大分子的锌(II)络合物。通过H-1-NMR,C-13-NMR,元素分析,UV-Vis /荧光光谱,熔点和熔点确定了硝基卟啉,氨基卟啉,双联卟啉(PB)和双联金属卟啉(Zn-PB)的形成。 ESI-TOF-MS技术。此外,研究了发色基团的光物理性质,例如吸收,发射和量子产率,以研究在三种不同有机溶剂中的光致能量转移。结果表明,随着卟啉的游离碱和锌(II)配合物的形成,Bodipy-卟啉组合中的Bodipy的发射被显着淬灭。由于高π结合,观察到Bodipy单元到卟啉(游离碱或锌螯合物)的有效能量转移在88%至96%之间。尽管乙腈极性很高,但能量也从Bodipy转移到了卟啉。

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