Understanding aromaticity is crucial for predicting the molecular properties and reactivity of cyclic π-conjugated systems. In this review, representative reports on the evaluation of aromaticity via spectroscopic methods in various expanded porphyrin systems are presented. The relationship between the photophysical properties and distinct aromatic characteristics in Hückel aromatic compounds was revealed through notable spectroscopic features exhibited by aromatic expanded porphyrins. Furthermore, modulating the molecular conformation and chemical environment enabled us to distinguish unique Möbius aromatic molecules successfully. These findings provide insight into the elemental molecular properties and aromaticity in expanded porphyrin systems and their potential real-world applications.

中文翻译：

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各种膨胀卟啉的光物理性质与芳香性/反芳香性之间的关系——汉斯·费舍尔职业奖论文

了解芳香性对于预测环状化合物的分子性质和反应性至关重要π-共轭系统。在这篇综述中，有代表性的关于芳香性评价的报告通过介绍了各种扩展卟啉系统中的光谱方法。Hückel 芳香族化合物的光物理性质与独特的芳香族特征之间的关系通过芳香族膨胀卟啉表现出的显着光谱特征揭示。此外，调节分子构象和化学环境使我们能够成功区分独特的莫比乌斯芳香分子。这些发现提供了对扩展卟啉系统中元素分子特性和芳香性及其潜在实际应用的深入了解。