聚乙烯咔唑/杂多阴离子杂化LB膜的制备、结构与光电性质  

Preparation, Structure and Photo-Electric Properties of Hybrid Polyvinylcarbazole/Heteropolyanions LB Films

作　　者：柳士忠[1] 柳利[1] 李建平[1] 何平[1] 杜祖亮[2] 胡振纲[2] 

机构地区：[1]湖北大学化学与材料科学学院,武汉430062 [2]河南大学固体表面实验室,开封475001

出　　处：《化学学报》2002年第7期1192-1196,共5页Acta Chimica Sinica

基　　金：国家自然科学基金 (Nos .2 96 710 11;2 99710 10 );湖北省自然科学基金 (Nos .96J0 35 ;99J0 6 6 )资助项目

摘　　要：首次选用聚乙烯咔唑 (PVK)、二十二烷酸 (BA)与杂多阴离子用LB技术制备了五种有机 /无机杂化LB膜 ,PVK/BA/HPC (HPC =Na5[PZ(H2 O)Mo11O3 9]·5H2 O ,Z =Mn ,Co,Cu ,Zn ,Ni) .用原子力显微镜 (AFM) ,UV vis ,小角X射线衍射 (LAXRD) ,表面光电压谱 (SPS) ,荧光光谱等对LB膜的结构与性质进行了表征 .结果表明 :它们在空气 /水界面有好的成膜性能 ,崩溃压为 2 2～ 2 7mN/m ,杂多阴离子作为一个单层夹在PVK和BA双层之间 .PVK/BA/HPCLB膜的光致发光具有PVK激基缔合物的特征荧光 。LB films of five new hybrid polyvinylcarbazole/heteropolyanions PVK/BA/HPC (HPC = Na-5[PZ(H2O)Mo11O39].5H(2)O, Z = Mn, Co, Cu, Zn, Ni) were prepared and characterized by pi-A isotherms, UV-vis absorption spectroscopy, low-angle X-ray diffraction (LAXRD), atomic force microscope (AFM), surface photovoltage spectroscopy (SPS) and fluorescence spectroscopy. The experimental results indicate that they have good film-forming property on the air-water interface. The collapse pressure of LB film is 22 - 27 mN/m. The lamellar structure obtained consists of monolayers of the heteropolyanions sandwiched between bilayers of the PVK macromolecule and BA. The fluorescence spectra showed that strong emission of PVK appeared in the films. The title LB films also have stronger photoelectric response.

关 键 词：结构 光电性质 聚乙烯基咔唑 杂多阴离子 混合LB膜 制备 表征 有机/元素杂化膜 

分 类 号：TB43[一般工业技术]