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一种溶液处理的具有超高导电性的n型导电聚合物
作者:小柯机器人 发布时间:2022/9/11 16:02:01

华南理工大学黄飞团队开发了一种溶液处理的具有超高导电性的n型导电聚合物。相关研究成果发表在2022年9月7日出版的国际知名学术期刊《自然》。

自掺杂聚乙炔的开创性工作以来,具有高导电性和溶液可加工性的导电聚合物(CPs)取得了巨大进展,从而开创了“有机合成金属”的新领域。各种高性能的CPs的实现使得多个有机电子器件的应用成为可能。然而,大多数CPs表现出空穴主导(p型)传输行为,而n型类似物的发展远远落后,很少表现出金属状态,通常受到低掺杂效率和环境不稳定性的限制。

该文中,研究人员提出了一种易于合成的高导电n型聚合物聚(苯并二呋喃二酮)(PBFDO)。该反应结合了氧化聚合和原位还原n掺杂,显著提高了掺杂效率,并且可以实现几乎0.9电荷/重复单元的掺杂水平。所得聚合物表现出超过2000S cm-1的突破导电性,具有优异的稳定性和意外的溶液加工性,而无额外的侧链或表面活性剂。此外,对PBFDO的详细研究揭示了相干电荷输运性质和金属态的存在。进一步证明了电化学晶体管和热电发电机的基准性能,从而为n型CPs在有机电子学中的应用铺平了道路。

附:英文原文

Title: A solution-processed n-type conducting polymer with ultrahigh conductivity

Author: Tang, Haoran, Liang, Yuanying, Liu, Chunchen, Hu, Zhicheng, Deng, Yifei, Guo, Han, Yu, Zidi, Song, Ao, Zhao, Haiyang, Zhao, Duokai, Zhang, Yuanzhu, Guo, Xugang, Pei, Jian, Ma, Yuguang, Cao, Yong, Huang, Fei

Issue&Volume: 2022-09-07

Abstract: Conducting polymers (CPs) with high conductivity and solution-processability have gained great advances since the pioneering work on doped polyacetylene1-3, thus creating the new field of ‘organic synthetic metals’4. Various high-performance CPs have been realised, which enable the applications of multiple organic electronic devices5,6. Nevertheless, most CPs exhibit hole-dominant (p-type) transport behaviour7,8, while the development of n-type analogues lags far behind and few exhibits metallic state, typically limited by low doping efficiency and ambient instability. Here, we present a facilely synthesized highly conductive n-type polymer poly(benzodifurandione) (PBFDO). The reaction combines oxidative polymerisation and in situ reductive n-doping, dramatically increasing the doping efficiency, and doping level of almost 0.9 charge per repeating unit can be achieved. The resultant polymer exhibits a breakthrough conductivity over 2000 S cm1 with excellent stability and an unexpected solution-processability without extra side chains or surfactants. Additionally, detailed investigations on PBFDO reveal coherent charge transport properties and existence of metallic state. The benchmark performances in electrochemical transistors and thermoelectric generators are further demonstrated, thus paving the way for application of the n-type CPs in organic electronics.

DOI: 10.1038/s41586-022-05295-8

Source: https://www.nature.com/articles/s41586-022-05295-8

期刊信息

Nature:《自然》,创刊于1869年。隶属于施普林格·自然出版集团,最新IF:42.778
官方网址:http://www.nature.com/