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投稿时间：2016-03-22
投稿时间：2016-03-22
中文摘要: 利用Suzuki偶联反应合成了3 种侧链含有不同电子受体的可溶性D-A型聚咔唑衍生物:聚[(9-(2-己基葵基)-9H-咔唑)-(9-(4-硝基苯基)-9H-咔唑)](PCz-NO2)、聚[(9-(2-己基葵基)-9H-咔唑)-(4-(9H-咔唑-9-基)苯甲醛)](PCz-CHO)和聚[(9-(2-己基葵基)-9H-咔唑)-(4-(9H-咔唑-9-基)苯甲腈)](PCz-CN)。基于这3种聚合物的存储器件(器件结构:Al(200 nm)/高分子(90 nm)/氧化铟锡(ITO)均表现出典型的电双稳电子开关效应和非易失性一次写入多次读出(WORM)型存储性能。随着共轭聚合物光学带隙的增加[2.26 eV(PCz-NO2)→2.79 eV(PCz-CHO)→3.20 eV(PCz-CN)],相应器件的启动阈值电压逐渐增大(-1.70 V→-1.81 V→-1.89 V);而电流开关比(ON/OFF)则依次减小(6.63×104→4.08×104→5.68×103)。含氰基的聚咔唑衍生物需要的开启电压最大,展现出来的电流开关比在3种聚合物中则最小。
Abstract:Three soluble D-A type polycarbazole derivatives with different electron acceptors in the side chain,including poly[(9-(2-hexyldecyl)-9H-carbazole)-(9-(4-nitrophenyl)-9H-carbazole)](PCz-NO2),poly[(9-(2-hexyldecyl)-9H-carbazole)-(4-(9H-carbazole-9-yl)benzaldehyde)] (PCz-CHO),and poly[(9-(2-hexyldecyl)-9H-carbazole)-(4-(9H-carbazole-9-yl)benzonitrile)] (PCz-CN),were synthesized through the Suzuki coupling reaction.These polymers-based electronic devices with a configuration of Al(200 nm)/polymer (90 nm)/Indium-Tin Oxide (ITO) had representative bistable electrical switching behavior and non-volatile write-once read-many-times (WORM)memory performance.When the optical bandgap of conjugated polymer was increased (2.26 eV(PCz-NO2)→2.79 eV(PCz-CHO)→3.20 eV(PCz-CN)),the threshold voltage of the corresponding electronic device gradually increased (-1.70 V→-1.81 V→-1.89 V),whereas the ON/OFF current ratio was changed from 6.63×104 for PCz-NO2 to 4.08×104 for PCz-CHO and to 5.68×103 for PCz-CN.Among these three derivatives,PCz-CN exhibited the biggest turn-on voltage and the lowest ON/OFF current ratio.
keywords: polycarbazole D-A conjugated polymers WORM memory devices threshold voltage ON/OFF current ratio
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基金项目:国家自然科学基金重点基金(51333002,21404037);教育部博士点基金(20120074110004);中央高校基金(WJ1514311)
引用本文：
刘柳,程庆,樊菲,张斌,陈彧.侧链含有不同电子受体的聚咔唑衍生物的合成及其WORM型存储性能[J].功能高分子学报,2016,29(2):163-171,181.
LIU Liu,CHENG Qing,FAN Fei,ZHANG Bin,CHEN Yu.Synthesis and WORM Memory Performance of Polycarbazole Derivatives with Different Electron Acceptors in the Side Chain[J].Journal of Functional Polymers,2016,29(2):163-171,181.
刘柳,程庆,樊菲,张斌,陈彧.侧链含有不同电子受体的聚咔唑衍生物的合成及其WORM型存储性能[J].功能高分子学报,2016,29(2):163-171,181.
LIU Liu,CHENG Qing,FAN Fei,ZHANG Bin,CHEN Yu.Synthesis and WORM Memory Performance of Polycarbazole Derivatives with Different Electron Acceptors in the Side Chain[J].Journal of Functional Polymers,2016,29(2):163-171,181.
