Enhancing the organic thin-film transistor performance of   diketopyrrolopyrrole-benzodithiophene copolymers via the modification of   both conjugated backbone and side chain

doi:10.1039/c5py00704f

CORC > 北京大学 > 工学院

	Enhancing the organic thin-film transistor performance of diketopyrrolopyrrole-benzodithiophene copolymers via the modification of both conjugated backbone and side chain
	Yi, Zhengran ; Ma, Lanchao ; Li, Ping ; Xu, Long ; Zhan, Xiaowei ; Qin, Jingui ; Chen, Xingguo ; Liu, Yunqi ; Wang, Shuai
刊名	POLYMER CHEMISTRY
	2015
关键词	FIELD-EFFECT TRANSISTORS HIGH-HOLE-MOBILITY POLYMER SEMICONDUCTORS ELECTRON MOBILITIES PRINTED TRANSISTORS AMBIPOLAR DESIGN SELENOPHENE MOIETIES
DOI	10.1039/c5py00704f
英文摘要	We developed a synthetic strategy for enhancing organic thin-film transistor performances of polymer semiconductors through the modification of the side chain to optimize the stacking conformation and the conjugated backbone to decrease the pi-pi stacking distance of polymers. Our studies demonstrate that the role of bulky alkyl chains attached to the donor unit or the acceptor unit is especially crucial for molecular stacking and aggregation and thus the OTFT device performance of polymers. However, with a larger pi-pi stacking distance in the thin film, the polymer with a bulky alkyl chain attached at the acceptor (P2) shows almost two orders of magnitude higher mobility than that with a bulky alkyl chain attached at the donor (P1). The better performance for P2 is attributed to the bulky alkyl chain at the acceptor which allows more coplanarity of the P2 backbone in the solution state, which leads to self-assembly, and finally forms a highly ordered layer-by-layer lamellar packing for P2 during spin-coating. Further improved performances were obtained by introducing two thiophene units into the polymer backbone to give P3, due to closer pi-pi stacking and in-plane pi-stacking alignment in the thin film and a higher HOMO energy level. Therefore, an optimized device performance was realized through subtle modification of the polymer structure, including both the main chain and the side chain, which provides an insight into structure-property relationships for high-mobility polymer semiconductors.; National Natural Science Foundation of China [51173055]; National Program on Key Basic Research Project (973 Program) [2013CBA01600]; China Postdoctoral Science Foundation [2013M542009]; SCI(E); EI; ARTICLE; xgchen@whu.edu.cn; liuyq@iccas.ac.cn; chmsamuel@hust.edu.cn; 30; 5369-5375; 6
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/421142]
专题	工学院
推荐引用方式 GB/T 7714	Yi, Zhengran,Ma, Lanchao,Li, Ping,et al. Enhancing the organic thin-film transistor performance of diketopyrrolopyrrole-benzodithiophene copolymers via the modification of both conjugated backbone and side chain[J]. POLYMER CHEMISTRY,2015.
APA	Yi, Zhengran.,Ma, Lanchao.,Li, Ping.,Xu, Long.,Zhan, Xiaowei.,...&Wang, Shuai.(2015).Enhancing the organic thin-film transistor performance of diketopyrrolopyrrole-benzodithiophene copolymers via the modification of both conjugated backbone and side chain.POLYMER CHEMISTRY.
MLA	Yi, Zhengran,et al."Enhancing the organic thin-film transistor performance of diketopyrrolopyrrole-benzodithiophene copolymers via the modification of both conjugated backbone and side chain".POLYMER CHEMISTRY (2015).