准分子
单重态裂变
单重态
电荷(物理)
激发态
人口
光谱学
化学物理
裂变
化学
材料科学
原子物理学
荧光
物理
核物理学
光学
社会学
人口学
中子
量子力学
作者
Long Wang,Wanlin Cai,Jing Sun,Yuling Wu,Bin Zhang,Xiangbin Tian,Shaoting Guo,WanZhen Liang,Hongbing Fu,Jiannian Yao
标识
DOI:10.1021/acs.jpclett.1c03265
摘要
Through the combination of transient spectroscopy and theoretical simulations, an accelerated singlet fission (SF) process was evidently observed in the strongly coupled H-type-like aggregation thin films of a dipyrrolonaphthyridinedione skeleton. Results elucidate that in this H-type-like aggregation, the substantially stabilized charge transfer (CT) state is close in energy with singlet and excimer states, resulting in a CT/excimer mixed state, which could drive excited-state population escaping from excimer trap and promote an ultrafast and highly efficient SF process. Our results not only enrich the limited capacity of SF materials but also contribute to an in-depth understanding of SF dynamics in H-type aggregation, which is of fundamental importance for designing new SF sensitizers and implementing practical SF applications.
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