Synthesis and Characterization of a Polymer Containing Electron-Transport Oxadiazole Groups

• Main Authors: Ching-HisangChang, 張景翔
• Other Authors: Yun Chen
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/93908327698807659433

碩士 === 國立成功大學 === 化學工程學系 === 103 === In this work, we synthesized a polymer (P1) containing oxadiazole groups to be an electron-transport material. P1 was synthesized successfully by Suzuki coupling reaction, and chemical structure of P1 was characterized by 1H-NMR and element analysis. Also, the physical properties (thermal, optical, electrochemical) were investigated from DSC, TGA, optical spectra and cyclic voltammetry respectively. The decomposition temperature (Td) and glass transition temperature (Tg) of P1 are 305.5 oC and 96.2 oC respectively which reveal P1 good thermal stability. In film state, the absorption and photo luminescence peaks of P1 are at 323/383 nm and 442 nm respectively. The HOMO and LUMO levels of P1 are -5.64 eV and -2.73 eV respectively. The LUMO level of P1 (-2.73 eV) is closed to emitting layer HY-PPV (-2.8 eV), meaning P1 should efficiently help electron transporting. The HOMO level of P1 (-5.64 eV) is much lower than HY-PPV (-5.0 eV), meaning P1 exhibits good hole-blocking ability.