Studies on the Synthesis and Light-Emitting Properties of 9-Substituted-3-(5-aryl-[1,3,4]oxadiazol-2-yl)-9H-carbazole

• Main Authors: Ing-Ju Li, 李盈儒
• Other Authors: Mou-Yung Yeh
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/32977857187737798000

碩士 === 國立成功大學 === 化學系碩博士班 === 91 === In this thesis the luminescent organic material was synthesized using carbazole as a starting material and KMnO4 as a cyclization reagent. The structure, physical and electroluminiecent properties for the obtained products including carbazole series and their indole derivatives were studied by the analysis of NMR elemental analysis IR, DSC,TGA,UV-VIS,CV,PL spectrum and EL test. For the thermal stability , all synthesized compounds had good thermal decomposition temperatures ,but low glass transition temperatures. The result for PL spectrum analysis indicated that substituted groups for the compounds with a long chain on N position effect the PL spectrum but with benzyl group on N position not. The EL device was fabricated by depositing as a film in vacumn and tested to emit too instantly to gain the EL spectrum . This was attributed to the larger velocity for hole-transport than electron-transport. This can be modified by adding the material which can lower the velocity of hole-transport or enhancing the thickness of the deposited film for emitting layer.