首页|基于烷氧基侧链工程的聚电解质设计及离子异质结半导体纤维

基于烷氧基侧链工程的聚电解质设计及离子异质结半导体纤维

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一维离子-电子器件具有尺寸小、集成能力强的独特优势,但在环境温度下的低离子迁移率限制了其在生物集成电子领域的应用能力.本文通过侧链工程在传统咪唑基离子液体中引入烷氧基,并与聚乙二醇甲基丙烯酸酯(poly(ethylene glycol)methacrylate,PEGMA)共聚,合成了 低玻璃化转变温度(glass-transition temperature,Tg)的聚阳离子电解质poly(VIM-m-TFSI),在室温下实现了更高的链迁移率,显示出更低的离子阻抗和更宽的电化学窗口(-2.7～+2.7V).与聚阴离子电解质poly(AMPS-EMIM)简单贴合,构筑了高性能全柔性离子异质结,实现了整流比为127的固态离子二极管.设计合成的两种聚电解质溶液表现出优异的溶液可加工性和流变性能,可直接用作3D打印油墨.最终,通过3D打印技术实现了离子异质结半导体纤维的一体化成型构筑,获得了基于5×5阵列单元的大面积半导体纤维纺织品,初步实现了输入信号的"0-1"整流,验证了离子异质结半导体纤维在织物逻辑电路领域的应用潜力.
Polyelectrolyte design and ionic-junction semiconductor fiber based on alkoxy side-chain engineering
One-dimensional iontronics have the unique advantages of small size and strong integration ability,but their low ion mobility at ambient temperature limits their application in the field of bio-integrated electronics.In this paper,polycationic electrolytes poly(VIM-m-TFSI)with low glass transition temperature(Tg)are synthesized by introducing alkoxy group into traditional ionic liquid based on imidazolium through side-chain engineering and copolymerized with poly(ethylene glycol)methacrylate(PEGMA).They achieve higher chain mobility at room temperature,leading a lower ionic impedance and wider electrochemical window(-2.7-+2.7 V).By simply bonding with polyanionic electrolyte poly(AMPS-EMIM),a high-performance flexible semiconductor ionic-junction is constructed to achieved a solid ionic diode with a rectification ratio of 127.The two polyelectrolyte solutions show excellent solution processability and rheological properties,which could be used as 3D printing inks directly.The integrated molding construction of ionic-junction semiconductor fibers are realized by three-dimension(3D)printing technology,and a large-area textile based on 5×5 array units is obtained to initially realize"0-1"rectification of input signal.It verifies the application potential of next-generation ionic-junction semiconductor fibers in the field of fabric logic circuits.

poly(ionic liquid)sside-chain engineeringalkoxythree-dimension(3D)printingionic-junction semiconductor fiber

邢毅、张靖灵、樊纯宇、吴琪琳、孙恒达、冯良文、王刚、朱美芳

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东华大学材料科学与工程学院,东华大学纤维材料改性国家重点实验室,上海 201620

四川大学化学学院,绿色化学与技术教育部重点实验室,成都 610064

聚离子液体 侧链工程 烷氧基 3D打印 离子异质结半导体纤维

中央高校基本科研业务费专项中央高校基本科研业务费专项中央高校基本科研业务费专项上海市科委科技创新行动计划政府间国际科技合作项目上海市科委自然科学研究项目

223202023G-12XKCX202301223202023G-022152071070023ZR1402000

2024

10.1360/SSC-2023-0244

中国科学(化学)
中国科学院

中国科学(化学)

CSTPCD北大核心
影响因子：0.685
ISSN：1674-7224
年,卷(期)：2024.54(4)
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