Multilevel Investigation of Charge Transport in Conjugated Polymers - New Opportunities in Polymer Electronics

	Multilevel Investigation of Charge Transport in Conjugated Polymers - New Opportunities in Polymer Electronics
	Dong, Huan-li 1; Yan, Qing-qing 1; Hu, Wen-ping 1,2,3
刊名	ACTA POLYMERICA SINICA
	2017-08-20
期号	8 页码:1246-1260
关键词	Conjugated Polymers Multilevel Solid State Structures Conjugated Polymer Single Crystals Intrinsic Property High Performance Devices
英文摘要	Conjugated polymers have demonstrated promising applications in fields of organic field-effect transistors, organic solar cells and organic light-emitting diodes, etc., due to their attractive advantages of unique optoelectronic properties, light weight, low cost and easy processability. However, regardless of the remarkable development for conjugated polymer materials and devices over the past decades, charge transport in conjugated polymers still remains unclear, which is mainly due to the molecular weight polydispersity and intermolecular entanglements of conjugated polymers as well as their naturally disordered structures in films. To achieve better understanding of the nature charge transport in conjugated polymers, continually increasing the molecular orders and reducing grain boundaries and defects are crucial. Aiming at this point, we propose a concept of multilevel charge transport investigation in conjugated polymers, and under this guideline, we have carried out systematical studies over the past years. In this article, we briefly summarize our recent results on charge transport investigation in conjugated polymers from macro-, to micro/nano-and molecular scales. With a derivative of poly(paraphenylene ethynylene) with thioacetyl end groups (TA-PPE) selected as an example, we found that the charge transport property could be significantly improved by 3 - 4 orders by continuously increasing the molecular orders in solid state. With downscaling to molecular scale, some new phenomenon was observed for conjugated polymers, such as the modulation of the redox center of tetrathiafulvalene (TTF) units on tunneling charge transport. In part 2 of the paper, combining the recent progress in literature, we give a detailed demonstration on the development history of conjugated polymer single crystals, with special emphasis on our efforts carried out in this field. Based on the investigation of polymer single crystals, a novel molecular packing model is found in the polymer micro/nanowires, that is the conjugated polymers aligned along the long-axis of nanowires, and the investigation of intrachain and interchain charge transport is achieved based on an individual conjugated polymer crystal, which is an important step in this filed. Finally, a short outlook is provided with regard to the concerns and the opportunities for the future studies on the multilevel properties and the devices of the conjugated polymers.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/39280]
专题	化学研究所_有机固体实验室
作者单位	1.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China 2.Tianjin Univ, Sch Sci, Tianjin Key Lab Mol Optoelect Sci, Tianjin 300072, Peoples R China 3.Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China
推荐引用方式 GB/T 7714	Dong, Huan-li,Yan, Qing-qing,Hu, Wen-ping. Multilevel Investigation of Charge Transport in Conjugated Polymers - New Opportunities in Polymer Electronics[J]. ACTA POLYMERICA SINICA,2017(8):1246-1260.
APA	Dong, Huan-li,Yan, Qing-qing,&Hu, Wen-ping.(2017).Multilevel Investigation of Charge Transport in Conjugated Polymers - New Opportunities in Polymer Electronics.ACTA POLYMERICA SINICA(8),1246-1260.
MLA	Dong, Huan-li,et al."Multilevel Investigation of Charge Transport in Conjugated Polymers - New Opportunities in Polymer Electronics".ACTA POLYMERICA SINICA .8(2017):1246-1260.