A nonconjugated radical polymer glass with high electrical conductivity

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2018-03-23 DOI:10.1126/science.aao7287

Yongho Joo, Varad Agarkar, Seung Hyun Sung, Brett M. Savoie, Bryan W. Boudouris

引用次数: 153

Abstract

Solid-state conducting polymers usually have highly conjugated macromolecular backbones and require intentional doping in order to achieve high electrical conductivities. Conversely, single-component, charge-neutral macromolecules could be synthetically simpler and have improved processibility and ambient stability. We show that poly(4-glycidyloxy-2,2,6,6-tetramethylpiperidine-1-oxyl), a nonconjugated radical polymer with a subambient glass transition temperature, underwent rapid solid-state charge transfer reactions and had an electrical conductivity of up to 28 siemens per meter over channel lengths up to 0.6 micrometers. The charge transport through the radical polymer film was enabled with thermal annealing at 80°C, which allowed for the formation of a percolating network of open-shell sites in electronic communication with one another. The electrical conductivity was not enhanced by intentional doping, and thin films of this material showed high optical transparency.

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具有高导电性的非共轭自由基聚合物玻璃

固态导电聚合物通常具有高度共轭的大分子骨架，需要有意掺杂才能达到高导电率。相反，单组分、电荷中性的大分子在合成上更为简单，并且具有更好的加工性和环境稳定性。我们的研究表明，聚（4-缩水甘油氧基-2,2,6,6-四甲基哌啶-1-氧乙基）是一种非共轭自由基聚合物，具有亚环境玻璃化转变温度，能快速发生固态电荷转移反应，在通道长度达 0.6 微米的情况下，电导率高达每米 28 西门子。在 80°C 的热退火条件下，激元聚合物薄膜中的电荷传输得以实现，从而形成了一个由相互电子通信的开壳位点组成的渗流网络。这种材料的导电性并没有因为有意掺杂而增强，而且薄膜显示出很高的光学透明度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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