Abstract: Organic conjugated molecule composed of central butoxybenzoselenadiazole (BseDZ) units as electron acceptor and thiophene groups as electron donors was prepared via the Stille coupling reaction. Structure and photoelectric properties of molecule were investigated. The test results of ¹H NMR and ¹³C NMR were consistent with the theory. UV-vis spectroscopy showed that molecule had broad absorption spectrum (237—464nm) and its fluorescence spectra exhibited strong emission peaks in red light regions either in acetonitrile solution or in PMMA films, which illustrated that target molecule was ideal red light emission materials. The conjugated molecule(2.26eV to 2.33eV) belonged to narrow band gap and exhibited stable redox curve by cyclic voltammetry. The above conclusion suggested that it had a potential application in photoelectric material fields.

Key words: electrochemistry, alkane, nuclear magnetic resonance(NMR), molecular synthesis

摘要： 基于丁氧基苯并硒二唑为电子受体, 噻吩为电子给体的有机共轭分子通过斯蒂尔偶联反应制得, 并对其进行结构表征和光电性能测试。结果表明:核磁共振¹H谱和¹³C谱检测结果与理论一致;在乙腈溶液和聚甲基丙烯酸甲酯薄膜中, 共轭分子有较宽的紫外吸收波长(237～464nm);荧光测得在红光区域有很强的激发峰, 表明该分子是一种理想的红光材料;共轭分子(2.26～2.33eV)属于窄带隙, 在电化学测试中表现出稳定的氧化还原曲线。以上结论表明该共轭分子在有机光电材料领域有潜在的应用价值。

关键词: 电化学, 烷烃, 核磁共振, 分子合成