Enhancing the healing ability and charge transport thermal stability of a diketopyrrolopyrrole based conjugated polymer by incorporating coumarin groups in the side chains,Journal of Polymer Science

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Enhancing the healing ability and charge transport thermal stability of a diketopyrrolopyrrole based conjugated polymer by incorporating coumarin groups in the side chains
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2021-08-16 , DOI: 10.1002/pol.20210483
Xiaobo Yu _{1,

2} , Cheng Li ₁ , Chenying Gao _{1,

2} , Liangliang Chen _{1,

2} , Xisha Zhang _{1,

2} , Guanxin Zhang ₁ , Deqing Zhang _{1,

2}

Affiliation

In this paper, we present a new design strategy for healable polymeric semiconductors, which are demanding for the future flexible electronics, by incorporating coumarin groups in the polymer side chains. The selection of coumarin groups is based on the fact that photo-dimerization can occur to coumarins upon UV light irradiation, thus side chains of conjugated polymers with coumarins can be cross-linked. The photo-crosslinking of side chains has negligible effect on the thin film morphology and interchain packing order for the DPP-based conjugated polymer PDPP4T-DCM with coumarins in the side chains. However, the photo-crosslinking can facilitate the repair of the mechanically damaged thin film of PDPP4T-DCM and the recovery of the semiconducting properties. Additionally, the photo-crosslinking due to the coumarins in the side chains can lock thin film morphology and thus improve the thermal stability of charge transport.

中文翻译：

通过在侧链中引入香豆素基团增强二酮吡咯并吡咯基共轭聚合物的愈合能力和电荷传输热稳定性

在本文中，我们通过在聚合物侧链中加入香豆素基团，提出了一种新的可修复聚合物半导体设计策略，这对未来的柔性电子产品提出了要求。香豆素基团的选择是基于香豆素在紫外光照射下会发生光二聚化，从而使共轭聚合物与香豆素的侧链发生交联。侧链的光交联对侧链中含有香豆素的 DPP 基共轭聚合物PDPP4T-DCM的薄膜形态和链间堆积顺序的影响可以忽略不计。然而，光交联可以促进机械损伤的PDPP4T-DCM薄膜的修复。以及半导体特性的恢复。此外，由于侧链中香豆素的光交联可以锁定薄膜形态，从而提高电荷传输的热稳定性。

更新日期：2021-08-16

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