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meso-meso-Linked Subporphyrin Dimer

机译:中观介导的亚卟啉二聚体

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In summary, directly meso-meso linked subporphyrin dimer 5 and 7 were synthesized by Ni-mediated reductive coupling of the corresponding meso-bromosubporphyrins. Dimer 5 exhibited a largely perturbed absorption spectrum, a redshifted and enhanced fluorescence spectrum, higher oxidation potentials with a large potential difference between the first and second oxidation waves, and a long-lived large anisotropy of S_1 state. These properties have been interpreted in terms of the effective conjugative interactions of the two subporphyrin units due to the small rotational barrier of the meso-meso bond. Exploration of more elaborated systems, such as meso-meso linked subporphyrin oligomers and porphyrin-subporphyrin hybrids, are actively pursued in our laboratories.
机译:总之,通过Ni介导的相应的中-溴亚卟啉的还原偶联,直接合成了中-中链连接的亚卟啉二聚体5和7。二聚体5表现出很大的吸收光谱,红移和增强的荧光光谱,较高的氧化电势以及在第一和第二氧化波之间的大电势差以及S_1态的长寿命大各向异性。这些性质已根据两个亚卟啉单元的有效共轭相互作用来解释,这是由于内消旋介观键的旋转障碍很小。在我们的实验室中,正在积极探索更复杂的系统,例如介观连接的亚卟啉低聚物和卟啉-亚卟啉杂化物。

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