离域电子
极化子
聚合物
共轭体系
材料科学
纳米技术
接受者
合理设计
化学物理
导电聚合物
化学
有机化学
物理
复合材料
凝聚态物理
电子
量子力学
作者
Maximilian Moser,Achilleas Savva,Karl J. Thorley,Bryan D. Paulsen,Tania Hidalgo,David Ohayon,Chen Hu,Alexander Giovannitti,Adam Marks,Nicola Gasparini,Andrew Wadsworth,Jonathan Rivnay,Sahika Inal,Iain McCulloch
标识
DOI:10.1002/anie.202014078
摘要
Abstract Donor–acceptor (D‐A) polymers are promising materials for organic electrochemical transistors (OECTs), as they minimize detrimental faradaic side‐reactions during OECT operation, yet their steady‐state OECT performance still lags far behind their all‐donor counterparts. We report three D‐A polymers based on the diketopyrrolopyrrole unit that afford OECT performances similar to those of all‐donor polymers, hence representing a significant improvement to the previously developed D‐A copolymers. In addition to improved OECT performance, DFT simulations of the polymers and their respective hole polarons also reveal a positive correlation between hole polaron delocalization and steady‐state OECT performance, providing new insights into the design of OECT materials. Importantly, we demonstrate how polaron delocalization can be tuned directly at the molecular level by selection of the building blocks comprising the polymers’ conjugated backbone, thus paving the way for the development of even higher performing OECT polymers.
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