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一种锌希夫碱配合物的表征及发光性能研究
引用本文:侯丽新,贾虎生,郝玉英,王华,陈柳青,许并社.一种锌希夫碱配合物的表征及发光性能研究[J].光谱学与光谱分析,2008,28(4):766-769.
作者姓名:侯丽新  贾虎生  郝玉英  王华  陈柳青  许并社
作者单位:1. 太原理工大学新材料界面科学与工程教育部重点实验室,山西太原030024;太原理工大学材料科学与工程学院,山西太原030024
2. 太原理工大学新材料界面科学与工程教育部重点实验室,山西太原030024;太原理工大学理学院,山西太原030024
基金项目:国家自然科学基金 , 国家自然科学基金 , 山西省自然科学基金 , 山西省留学回国人员科研启动基金 , 山西省科技攻关项目
摘    要:合成并通过真空升华提纯得到了一种高纯度的希夫碱有机金属配合物水杨醛缩邻苯二胺合锌。通过元素分析、红外光谱、热重-差热曲线、紫外-可见光吸收光谱、荧光发射光谱和光致发光光谱表征了其结构、热稳定性以及能带结构。实验结果表明:水杨醛缩邻苯二胺合锌的玻璃化温度(Tg)高达183℃,分解温度为449℃;水杨醛缩邻苯二胺合锌是一种多晶粉末状的发光材料,在紫外光的激发下,在四氢呋喃溶液体系中的荧光发射峰在508nm处,为蓝绿色荧光,色纯度高,荧光量子效率高,禁带宽度2.62eV;利用真空热蒸镀很容易制备高质量薄膜,其发射峰在562nm处,半高宽为48.5nm的黄绿光发射。利用水杨醛缩邻苯二胺合锌为发光层制备了黄光有机电致发光器件。

关 键 词:希夫碱  电致发光  热稳定性  能带结构
文章编号:1000-0593(2008)04-0766-04
修稿时间:2006年12月12

Characterization and Photoluminescence Properties of an Azomethin-Zinc Complex
HOU Li-xin,JIA Hu-sheng,HAO Yu-ying,WANG Hua,CHEN Liu-qing,XU Bing-she.Characterization and Photoluminescence Properties of an Azomethin-Zinc Complex[J].Spectroscopy and Spectral Analysis,2008,28(4):766-769.
Authors:HOU Li-xin  JIA Hu-sheng  HAO Yu-ying  WANG Hua  CHEN Liu-qing  XU Bing-she
Institution:Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, China.
Abstract:A Schiff base organic metal complex, Bis(salicylidene)-1,2-phenylenediam-ine Zinc(II) with high purity, was synthesized and purified by vacuum sublimation. Its structure, thermal stability and energy band structure were investigated by element analysis, FTIR spectra, TG-DTA curve, UV-Vis absorption spectra, fluorescece emission spectra and PL spectra. Experimental results showed that the complex is a thermally stable, polycrystalline material, with glass temperature and decomposition temperature being 183 and 449 degrees C, respectively. In its infrared spectrum, a high intensity band was at about 1 385 cm(-1). This band was typical of the conjugated C=N stretching vibration, which shifted to higher frequency in relation to the free ligand of salicylaldehyde with 1,2-phenylenediamine. The new bnd at 529 cm(-1) was assigned to Zn-O stretching vibration. Its UV absorption bands were at about 297 and 406 nm, and its tetrahydrofuran solution emitted intensive blue-green fluorescence at the peak wavelength of 508 nm. The absorption band at about 406 nm can be assigned to the intrinsic absorption of C=N. Its optical gap was about 2.62 eV, which was determined by the intrinsic absorption band edge of the complex in tetrahydrofuran solution. Under UV excitation at 365 nm, the complex in film emitted yellow-green fluorescence with the maximum emission peak at 562 nm and a full-width at half-maximum of 48.5 nm in PL spectra. Finally, yellow organic light-emitting devices using this complex as the emissive layer were fabricated and investigated.
Keywords:Schiff base  Electroluminescence  Thermal stability  Energy band structure
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