Synthesis and properties of pteridine-2,4-dione-functionalised oligothiophenes
Synthesis and properties of pteridine-2,4-dione-functionalised oligothiophenes
复制标题
蝶啶-2,4-二酮功能化低聚噻吩的合成与性能
作者：
Wiles A
描述了受体官能化低聚噻吩衍生物（t3、t6、t7、t8）的合成，其中蝶啶-2,4-二酮受体单元对称排列在衍生物t6-t8中。受体单元的对称排列源于选择性溴化结构单元t3的共轭噻吩部分的能力。当从 t3 到 t8 增加共轭时，近红外区域的吸收显着增加，同时 HOMO/LUMO 间隙变窄，这可能会促进它们作为光电材料的未来应用。
The synthesis of acceptor-functionalised oligothiophene derivatives (t3, t6, t7, t8) is described, where the pteridine-2,4-dione acceptor units are arranged symmetrically in derivatives t6–t8. The symmetrical arrangement of acceptor units stems from the ability to selectively brominate the conjugated thiophene moiety of building block t3. Upon increasing the conjugation by going from t3 to t8, a significant increase in absorption toward the near-infrared region and a simultaneous narrowing of the HOMO/LUMO gap occurs, which may promote their future application as optoelectronic materials.