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Thiazole Imide‐Based All‐Acceptor Homopolymer: Achieving High‐Performance Unipolar Electron Transport in Organic Thin‐Film Transistors
Advanced Materials ( IF 27.4 ) Pub Date : 2018-01-16 , DOI: 10.1002/adma.201705745 Yongqiang Shi 1 , Han Guo 1 , Minchao Qin 2 , Jiuyang Zhao 1 , Yuxi Wang 1 , Hang Wang 1 , Yulun Wang 1 , Antonio Facchetti 3 , Xinhui Lu 2 , Xugang Guo 1
Advanced Materials ( IF 27.4 ) Pub Date : 2018-01-16 , DOI: 10.1002/adma.201705745 Yongqiang Shi 1 , Han Guo 1 , Minchao Qin 2 , Jiuyang Zhao 1 , Yuxi Wang 1 , Hang Wang 1 , Yulun Wang 1 , Antonio Facchetti 3 , Xinhui Lu 2 , Xugang Guo 1
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High‐performance unipolar n‐type polymer semiconductors are critical for advancing the field of organic electronics, which relies on the design and synthesis of new electron‐deficient building blocks with good solubilizing capability, favorable geometry, and optimized electrical properties. Herein, two novel imide‐functionalized thiazoles, 5,5′‐bithiazole‐4,4′‐dicarboxyimide (BTzI) and 2,2′‐bithiazolothienyl‐4,4′,10,10′‐tetracarboxydiimide (DTzTI), are successfully synthesized. Single crystal analysis and physicochemical study reveal that DTzTI is an excellent building block for constructing all‐acceptor homopolymers, and the resulting polymer poly(2,2′‐bithiazolothienyl‐4,4′,10,10′‐tetracarboxydiimide) (PDTzTI) exhibits unipolar n‐type transport with a remarkable electron mobility (μe) of 1.61 cm2 V−1 s−1, low off‐currents (Ioff) of 10−10−10−11 A, and substantial current on/off ratios (Ion/Ioff) of 107−108 in organic thin‐film transistors. The all‐acceptor homopolymer shows distinctive advantages over prevailing n‐type donor−acceptor copolymers, which suffer from ambipolar transport with high Ioffs > 10−8 A and small Ion/Ioffs < 105. The results demonstrate that the all‐acceptor approach is superior to the donor−acceptor one, which results in unipolar electron transport with more ideal transistor performance characteristics.
中文翻译：
噻唑亚胺基全受体均聚物：在有机薄膜晶体管中实现高性能单极电子传输
高性能单极n型聚合物半导体对于推进有机电子领域至关重要，有机半导体依赖于具有良好增溶能力，良好几何形状和优化电性能的新型电子贫乏积木的设计和合成。本文成功地成功制备了两种新型的酰亚胺官能化噻唑5,5'-bithiazole-4,4'-dicarboxyimide（BTzI）和2,2'-bithiazolothienyl‐4,4'，10,10'-tetracarboxydiimide（DTzTI）合成的。单晶分析和理化研究表明，DTzTI是构建全受体均聚物的出色构建基块，所得聚合物聚（2,2'-bithiazolothienyl-4,4'，10,10'-四羧基二酰亚胺）（PDTzTI）表现出具有显着电子迁移率的单极n型输送（μ Ë 1.61厘米）2 V -1 s -1，有机薄型中的低截止电流（I off）为10 -10 -10 -11 A，并且实际的电流开/关比（I on / I off）为10 7 -10 8。薄膜晶体管。全受体均聚物显示出优于主要的n型供体-受体共聚物的优势，后者受双极性传输的影响，高I off s> 10 -8 A和小I on / I off s <10 5。结果表明，全受体方法优于供体受体，这导致单极电子传输具有更理想的晶体管性能特征。
更新日期：2018-01-16
中文翻译：
噻唑亚胺基全受体均聚物：在有机薄膜晶体管中实现高性能单极电子传输
高性能单极n型聚合物半导体对于推进有机电子领域至关重要，有机半导体依赖于具有良好增溶能力，良好几何形状和优化电性能的新型电子贫乏积木的设计和合成。本文成功地成功制备了两种新型的酰亚胺官能化噻唑5,5'-bithiazole-4,4'-dicarboxyimide（BTzI）和2,2'-bithiazolothienyl‐4,4'，10,10'-tetracarboxydiimide（DTzTI）合成的。单晶分析和理化研究表明，DTzTI是构建全受体均聚物的出色构建基块，所得聚合物聚（2,2'-bithiazolothienyl-4,4'，10,10'-四羧基二酰亚胺）（PDTzTI）表现出具有显着电子迁移率的单极n型输送（μ Ë 1.61厘米）2 V -1 s -1，有机薄型中的低截止电流（I off）为10 -10 -10 -11 A，并且实际的电流开/关比（I on / I off）为10 7 -10 8。薄膜晶体管。全受体均聚物显示出优于主要的n型供体-受体共聚物的优势，后者受双极性传输的影响，高I off s> 10 -8 A和小I on / I off s <10 5。结果表明，全受体方法优于供体受体，这导致单极电子传输具有更理想的晶体管性能特征。
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