Two isomeric N‐annulated perylene diimide dimers, namely, p‐BDNP and m‐BDNP were designed and synthesized via geometric tuning. The distinct molecular geometry and packing arrangements of isomers with almost identical optical and electrochemical properties rendered us an in‐depth understanding of the molecular structure–aggregation state–photovoltaic performance relationship. Blended with the commercially available donor PCE‐10, p‐BDNP and m‐BDNP showed distinct differences in photovoltaic performance with power conversion efficiencies (PCEs) of 5.01 % and 4.15 %, respectively.

中文翻译：

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用于有机太阳能电池的Isomeric N环戊二酰亚胺二聚体

设计并通过几何调整合成了两个异构的N环per二酰亚胺二聚体，即p- BDNP和m- BDNP。具有几乎相同的光学和电化学性质的异构体不同的分子几何结构和堆积排列，使我们对分子结构-聚集态-光伏性能之间的关系有了更深入的了解。与商用供体PCE-10混合，p - BDNP和m- BDNP在光伏性能方面表现出明显差异，功率转换效率（PCE）分别为5.01％和4.15％。