Jiang Mengjia, Li Shuyu, Zhen Chun, Wang Lingsong, Li Fei, Zhang Yihan, Dong Weibing, Zhang Xiaotao, Hu Wenping
Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China.
Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China.
Front Optoelectron. 2022 May 9;15(1):21. doi: 10.1007/s12200-022-00022-7.
Simultaneously realizing the optical and electrical properties of organic materials is always challenging. Herein, a convenient and promising strategy for designing organic materials with integrated optoelectronic properties based on cocrystal engineering has been put forward. By selecting the fluorene (Flu) and the 7,7',8,8'-tetracyanoquinodimethane (TCNQ) as functional constituents, the Flu-TCNQ cocrystal prepared shows deep red emission at 702 nm, which is comparable to the commercialized red quantum dot. The highest electron mobility of organic field-effect transistor (OFET) based on Flu-TCNQ is 0.32 cm V s. Spectroscopic analysis indicates that the intermolecular driving force contributing to the co-assembly of Flu-TCNQ is mainly charge transfer (CT) interaction, which leads to its different optoelectronic properties from constituents.
同时实现有机材料的光学和电学性质一直具有挑战性。在此，基于共晶工程提出了一种设计具有集成光电性质的有机材料的便捷且有前景的策略。通过选择芴（Flu）和7,7',8,8'-四氰基对苯二醌二甲烷（TCNQ）作为功能成分，制备的Flu-TCNQ共晶在702nm处呈现深红色发射，这与商业化的红色量子点相当。基于Flu-TCNQ的有机场效应晶体管（OFET）的最高电子迁移率为0.32 cm² V⁻¹ s⁻¹。光谱分析表明，促成Flu-TCNQ共组装的分子间驱动力主要是电荷转移（CT）相互作用，这导致其光电性质与成分不同。
