聚苯胺-碳纳米管复合体的制备及其光响应  

Synthesis of polyaniline-MWNT composite nano-tube and electrical and optical properties

作　　者：封伟[1] 易文辉[2] 徐友龙[2] 连彦青[1] 王晓工[1] 吉野胜美 

机构地区：[1]清华大学化工系高分子材料研究所,北京100084 [2]西安交通大学电子与信息工程学院,西安710049 [3]日本大贩大学电子工学吉野研究室

出　　处：《物理学报》2003年第5期1272-1277,共6页Acta Physica Sinica

基　　金：教育部留学回国人员基金 (批准号 :2 0 0 134 5 );国家自然科学基金 (批准号 :5 0 10 30 0 5 )资助的课题~~

摘　　要：纳米尺寸导电材料对功能分子材料及分子器件的作用越来越显得重要 .采用原位乳液聚合法制备聚苯胺 碳纳米管复合体 ,SEM和TEM照片显示复合管的直径为 60— 70nm ,聚苯胺的包裹层厚度约 2 5— 3 0nm .x射线衍射及热分析表明纳米复合管的结晶性能增强 ,热稳定性得到提高 .光电响应试验表明复合管的光吸收增强 ,光电流增大 ,说明聚苯胺A composite of polyaniline (PANI) encapsulating mutil-wall carbon nanaotube(MWNT) composite nanotube with nanometer size has been synthesized by in-situ emulsion polymerization. Nanotube dimensions have been measured and the nature of the association between the components have been observed using SEM and TEM techniques, the diammer of nanocomposite tube is about 60-70 nm. The improvement of thermal stability and crystallinity of nanocomposites have been evaluated by using TGA and XRD. The photoconductivity of PANI-MWNT composite nanotube has been enhanced markedly and discussed by taking the photoinduced charge transfer between PANI and MWNT into consideration.

关 键 词：聚苯胺-碳纳米管复合体 制备 光响应 原位乳液聚合法 纳米尺寸导电材料 光诱导电荷分离现象 

分 类 号：O488[理学—固体物理]