Multifunctional Diketopyrrolopyrrole‐Based Conjugated Polymers with Perylene Bisimide Side Chains

• DOI: 10.1002/marc.201700611
• Publication Date: 2017-11-24T11:03:46Z
• Authors: Cheng Li; Changshi Yu; Wenbin Lai; Shijie Liang; Xudong Jiang; Guitao Feng; Jianqi Zhang; Yunhua Xu; Weiwei Li
• Keywords: Molecular Structure; Polymers; Imides; 7. Clean energy; 01 natural sciences; 0104 chemical sciences; Electron Transport; Electric Power Supplies; Solar Energy; Sunlight; Pyrroles; Perylene

AbstractTwo conjugated polymers based on diketopyrrolopyrrole (DPP) in the main chain with different content of perylene bisimide (PBI) side chains are developed. The influence of PBI side chain on the photovoltaic performance of these DPP‐based conjugated polymers is systematically investigated. This study suggests that the PBI side chains can not only alter the absorption spectrum and energy level but also enhance the crystallinity of conjugated polymers. As a result, such polymers can act as electron donor, electron acceptor, and single‐component active layer in organic solar cells. These findings provide a new guideline for the future molecular design of multifunctional conjugated polymers.