The literature capturing the unusual electronic structure and photophysics of monomeric azulene and its simple derivatives is briefly reviewed. The principles established on the basis of this model are then used to understand the experimental and predicted spectroscopic and photophysical behaviour of organic compounds containing two or more of the azulene carbon framework. Biazulenes, terazulenes and multiazulenes, both linked and fused, are discussed. The possibilities of singlet exciton fission from the S₂ states of some of these molecules and their aggregates are examined. Gaps in the existing experimental data are identified.

中文翻译：

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含氮杂碳骨架倍数的分子的光物理

简要回顾了捕获单体a烯及其简单衍生物的异常电子结构和光物理的文献。然后，基于该模型建立的原理将用于理解含有两个或多个氮杂环丁烷碳骨架的有机化合物的实验性和预测性光谱和光物理行为。讨论了联和稠合的双氮杂，二氮杂和多氮杂。研究了某些分子及其聚集体从S ₂状态发生单重态激子裂变的可能性。确定现有实验数据中的空白。