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中文摘要：
随着有机电致发光器件（OELD）的发展，有机电子传输材料研究逐渐引起人们广泛兴趣。制备了3种不同长共轭结构的新型2，5-二芳基-1，3，4-噁二唑类衍生物（4a～4c），以FTIR、^1HNMR、TGA、C-V、UV-vis、FL对化合物的结构与性能进行了表征和研究。结果显示，噁二唑类衍生物分子结构对其热稳定性和分子的能级结构明显产生影响，分子中π电子共轭程度提高可有效地提高电子亲和势，分子极性和分子共轭度提高均有利于提高噁二唑衍生物（4c）的热稳定性。
英文摘要：
With the development of organic light-emitting diodes （OLEDs）, the electron transport materials （ETMs） have attracted considerable interest. In the paper, three novel long conjugation structural 2,5-diphenyl-1,3,4-oxadiazole derivates, 4a, 4b and 4c were synthesized, their structure and properties were characterized and evaluated by FTIR, ^1HNMR, UV-vis, FL, TGA and C-V, respectively. The results show that the thermal stabilities and LUMO energy levels of the oxadiazole derivates are significantly affected by molecular structure. The extended molecular conjugation structure significantly enhances electron affinity of molecules. Enhancing p electron conjugation and polarity of molecules will be beneficial to increase of thermal properties of oxadiazole derivates.
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