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通过Suzuki反应,在噻吩取代吡咯并吡咯二酮(DPP)的两端引入不同的电子给受体,成功构建了一系列基于吡咯并吡咯二酮的D-π-A化合物.通过核磁共振谱、紫外-可见吸收光谱、荧光光谱、循环伏安结合理论计算对这一系列化合物进行了表征.通过对比发现,随着分子共轭长度的增加,其紫外吸收呈现较明显的红移,最大移动到近红外区(650nm).电化学研究表明,该类化合物具有较低的能级.光学以及电化学性质研究表明,该DPP类化合物可以作为构建有机电子学方面的重要材料,特别是在有机太阳能电池方面具有潜在的应用.
Through the Suzuki reaction, a series of D-π-A compounds based on diketopyrrolopyrrole were successfully constructed by introducing different electron donors at the two ends of thiophene-substituted diketopyrrolopyrrole (DPP) UV-visible absorption spectra, fluorescence spectra and cyclic voltammetry were used to characterize this series of compounds.Compared with the experimental results, the UV absorption showed a more obvious redshift as the conjugate length increased, Near infrared (650nm) .Electrochemical studies have shown that these compounds have lower energy levels.Phosphorescence and electrochemical properties of the DPP compounds can be used as important materials for the construction of organic electronics, especially in organic solar energy Battery has potential applications.