Effect of bulkiness on the triplet state of carbazole-benzophenone-based dyad systems
作者:Sunhee Lee、Yeeun Lee、Keumhee Lee、Sohee Lee、Kang-Kyun Wang、Won-Sik Han
DOI:10.1016/j.jphotochem.2022.114347
日期:2023.3
particular, the lowest triplet energy state (T1) of the dyads was affected by the bulkiness of the benzophenone unit; the T1 state for PCBP and XCBP was confined to the benzophenone unit, whereas the T1 state for PCTBP was confined to the carbazole unit. The results obtained in this study will provide useful information in related fields owing to the importance of the excited T1 state in various optoelectronic
在这项工作中,一系列基于咔唑-二苯甲酮的二元体系,(4'-(9 H -carbazol-9-yl)-[1,1'-biphenyl]-4-yl)(phenyl)methanone ( PCBP )和 (4'-(9 H -carbazol-9-yl)-2,3,5,6-tetramethyl-[1,1'-biphenyl]-4-yl)(phenyl)methanone ( PCTBP ),被设计和准备研究体积与二苯甲酮单元的结构-性能关系。作为比较, (4'-(9 H -carbazol-9-yl)-2',5'-dimethyl-[1,1'-biphenyl]-4-yl)(phenyl)methanone ( XCBP )还制备了咔唑和二苯甲酮单元之间的二甲苯基桥接单元。PCBP和PCTBP的光物理和电化学性质取决于二苯甲酮单元的体积,差异显着。这些结果表明,基于咔唑-二苯甲酮的二元体系中的蓬松