Donor–acceptor–donor (DAD) triad systems are commonly applied as active materials in ambipolar organic field-effect transistors, organic solar cells, and NIR-emitting organic light-emitting diodes. Often, these triads utilize oligothiophenes as donors, whereas their oxygen-containing analogs, oligofurans, are far less studied in this setup. Here we introduce a family of DAD triads in which the donors are oligofurans and the acceptor is benzothiadiazole. In a combined computational and experimental study, we show that these triads display optical bandgaps similar to those of their thiophene analogs, and that a bifuran donor is sufficient to produce emission in the NIR spectral region. The presence of a central acceptor unit increases the photostability of oligofuran-based DAD systems compared with parent oligofurans of the similar length.

供体-受体-供体 (DAD) 三元组系统通常用作双极有机场效应晶体管、有机太阳能电池和 NIR 发射有机发光二极管中的活性材料。通常，这些三联体利用低聚噻吩作为供体，而它们的含氧类似物低聚呋喃在此设置中的研究要少得多。在这里，我们介绍了一个 DAD 三联体家族，其中供体是低聚呋喃，受体是苯并噻二唑。在联合计算和实验研究中，我们表明这些三元组显示出与其噻吩类似物相似的光学带隙，并且双呋喃供体足以在 NIR 光谱区域产生发射。与类似长度的母体低聚呋喃相比，中央受体单元的存在提高了基于低聚呋喃的 DAD 系统的光稳定性。