All-conjugated donor–acceptor block copolymers featuring a pentafulvenyl-polyisocyanide-acceptor
All-conjugated donor–acceptor block copolymers featuring a pentafulvenyl-polyisocyanide-acceptor
复制标题
DOI：
10.1039/c9py01879d
复制
发表时间：
2020-03
影响因子：
4.6
通讯作者：
Sandra Schraff;Sudeshna Maity;Laura Schleeper;Yifan Dong;Sebastian Lucas;A. Bakulin;E. von Hauff
中科院分区：
文献类型：
--
作者：
Sandra Schraff;Sudeshna Maity;Laura Schleeper;Yifan Dong;Sebastian Lucas;A. Bakulin;E. von Hauff
我们报道了一种富烯基官能化多异氰化物（PIC2），其电子迁移率高达 μe = 10−2 cm2 V−1 s−1。 PIC2 已与区域规整聚(3-十二烷基噻吩) (P3DT → P(3DT-b-IC2)) 或区域规整聚噻唑 (PTzTHX → P(TzTHX-b-IC2)) 合并到嵌段共聚物中。具有不同嵌段尺寸的嵌段共聚物批次已被分离并研究了它们的性能。固态荧光猝灭和瞬态吸收光谱表明光激发时能量从供体块转移到受体块。使用 P(3DT-b-IC2) 制造原理验证有机光伏电池，电池的开路电压 (VOC) 约为 100%。 0.89 V。还研究了溶液中 P(3DT-b-IC2) 的聚集行为，结果表明，在优化的聚集条件下，P(3DT-b-IC2) 自组装成直径为 1-8 μm 的离散微球，尺寸分布为 1.72 (±0.37) μm。
We report a fulvenyl-functionalized polyisocyanide (PIC2) with a high electron mobility of μe = 10−2 cm2 V−1 s−1. PIC2 has been incorporated into block-copolymers with either regioregular poly(3-dodecylthiophene) (P3DT → P(3DT-b-IC2)) or regioregular polythiazole (PTzTHX → P(TzTHX-b-IC2)). Block copolymer batches with different block-sizes have been isolated and their properties have been studied. Fluorescence quenching in the solid state and transient absorption spectroscopy indicate energy transfer from the donor- to the acceptor block upon photo-excitation. Fabrication of proof-of-principle organic photovoltaic cells with P(3DT-b-IC2) gave cells with an open circuit voltage (VOC) of ca. 0.89 V. The aggregation behavior of P(3DT-b-IC2) from solution was also studied, which revealed self-assembly into discreet microspheres of 1–8 μm diameter, with a size distribution of 1.72 (±0.37) μm under optimized aggregation conditions.