A collection of through-space tetracene oligomers demonstrates sub-picosecond singlet fission, as revealed by femtosecond-resolved transient absorption spectroscopy. These oligomers exhibit a remarkably high yield of the triplet pair state, a characteristic seldom observed in tetracene derivatives owing to the unfavorable energetics associated with their singlet and triplet energy levels.

中文翻译：

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一系列新的系统设计的空间耦合并四苯低聚物中的单线态裂变


飞秒分辨瞬态吸收光谱揭示了一系列穿过空间的并四苯低聚物表现出亚皮秒单重态裂变。这些低聚物表现出非常高的三线态对态产率，这是在并四苯衍生物中很少观察到的特征，因为与其单线态和三线态能级相关的不利能量学。