柔性TCNQ@Cu-DOBDC薄膜的制备及其电学性能研究  

Study on preparation and electrical properties offlexible TCNQ@Cu-DOBDC films

作　　者：王维科 张雪莲 马闯 贾震 闫瑞航 WANG Wei-ke;ZHANG Xue-lian;MA Chuang;JIA Zhen;YAN Rui-hang(School of Material Science and Engineering,Shaanxi University of Science&Technology,Xi′an 710021,China)

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《陕西科技大学学报》2024年第3期125-134,149,共11页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(51903141);陕西省科技厅自然科学基金面上项目(2023-JC-YB428)。

摘　　要：采用磁控溅射(magnetron sputtering, MS)将Cu膜均匀沉积在柔性聚酯纤维布上,在碱性溶液中将Cu膜转化为氢氧化铜纳米线(Cu(OH)_(2)NWs)便于与有机配体结合反应,探究不同反应时间对Cu(OH)_(2)NWs的形貌和结构的影响规律.将Cu(OH)_(2)NWs与2,5-二羟基对苯二甲酸(DOBDC)反应,得到具有蜂巢结构的MOFs Cu-DOBDC.Cu-DOBDC的本征电导率极低,在其1D孔道引入了TCNQ客体分子,诱导材料电导率显著提高.研究结果表明,TCNQ与Cu-DOBDC间通过氧化还原反应在MOFs内部形成局部导电区域,电导率大约提升4个数量级.结果表明,柔性TCNQ@Cu-DOBDC薄膜可以作为一种新型柔性材料并用于各种微电子器件中,拓宽了各种导电MOFs材料的应用渠道.The Cu thin film was uniformly deposited on the flexible polyester via magnetron sputtering(MS),and in alkaline solution the Cu film was converted into copper hydroxide nanowires(Cu(OH)_(2) NWs,which was conductive to binding and reacting with organic-ligand.And then the influence of reaction times on the morphology of Cu(OH)_(2) NWs was explored.The Cu-DOBDC MOFs with honeycomb structure were prepared via the reaction between Cu(OH)_(2) NWs and 2,5-dihydroxyterephthalic acid(DOBDC),and the intrinsic conductivity of Cu-DOBDC was extremely low.Here,the TCNQ guest molecules were introduced into 1D pores of Cu-DOBDC,which brought out the higher conductivity of the resulting MOFs.The results show that TCNQ could form a local conductive region inside the MOFs through the redox interaction between Cu-DOBDC and the organic-ligand,and the conductivity is increased by~four orders of magnitude.Generally,the flexible TCNQ@Cu-DOBDC films can be used for the preparation of various flexible microelectronic devices,broadening the application channels of different conductive MOFs.

关 键 词：柔性MOFs薄膜 掺杂改性 客体分子 导电性 

分 类 号：TB383[一般工业技术—材料科学与工程]