PMOCOPV/TiO_2纳米复合材料的制备及发光性能  

Preparation and Photoluminescent Properties of PMOCOPV/TiO_2 Nanocomposites

作　　者：李宝铭[1] 吴洪才[1] 李晓奇[1] 董发昕[2] 

机构地区：[1]西安交通大学电信学院光电技术与太阳能研究所,陕西西安710049 [2]西北大学化学系,陕西西安710069

出　　处：《半导体光电》2005年第5期415-417,共3页Semiconductor Optoelectronics

基　　金：国家自然科学基金(60277002);西安交通大学科研基金资助项目

摘　　要：采用原位聚合方法制备聚(2-甲氧基-5-辛氧基)对苯乙炔(PMOCOPV)/二氧化钛(TiO2)纳米复合材料.利用傅里叶变换红外光谱(FT-IR)、紫外-可见吸收光谱(UV-Vis)、透射电镜(TEM)和荧光光谱(FL)对纳米复合材料的结构及发光性能进行研究.TEM显示,纳米复合材料为分散均匀的球形颗粒,粒径尺寸为60～80 nm.PL谱表明,随着TiO2含量增加,纳米复合材料的发光强度逐渐增强,且发射峰由600nm蓝移至575 nm.Poly （2-methoxy5-octoxy）-p-phenylene vinylene （PMOCOPV）/titania （TiO2） nanocomposites with different contents of TiO2 nanoparticles were prepared by in-situ polymerization. The structures of nanocomposites were characterized by Fourier transform infrared spectrometry （FT-IR）, ultraviolet-visible absorption spectrum （UV-Vis） and tunneling electron microscope （TEM）, moreover, the photoluminescent properties were also studied by photoluminescent spectrum （PL）. TEM suggested that the nanocomposites were spheric particles that dispersed uniformly and the size of particles was 60 - 80 nm. PL spectra showed that the luminescent intensity of nanocomposites was improved remarkably and the emission maximum wavelength was blue shifted from 600 nm to 575 nm with the increase of content of TiO2 nanoparcles.

关 键 词：聚(2-甲氧基-5-辛氧基)对苯乙炔 二氧化钛 纳米复合材料 发光 

分 类 号：O644.16[理学—物理化学]