New organic photosensitizers based on triphenylamine and hydantoin as anchoring group onto TiO2 Surface
作者:Mauricio Caicedo-Reina、Robson R. Guimarães、Alejandro Ortiz、Koiti Araki、Braulio Insuasty
DOI:10.1016/j.molstruc.2021.132072
日期:2022.3
In this work, we present the synthesis of novel D-π-A compounds based on the structure of 2-(3-hexyl-2-oxoimidazolin-4-ylidene) malononitrile, which can function as an acceptor group and anchoring group to the TiO2 surface. The synthetic route of the dyes involving a Knoevenagel condensation under microwave irradiation with donors based on triphenylamine (TPA) and thiophene moiety as a conjugated wire
在这项工作中,我们提出了基于 2-(3-hexyl-2-oxoimidazolin-4-ylidene) 丙二腈结构的新型 D-π-A 化合物的合成,它可以作为受体基团和锚定基团到TiO 2表面。染料的合成路线包括在微波辐射下与基于三苯胺 (TPA) 和噻吩部分作为共轭线的供体进行 Knoevenagel 缩合。此外,还进行了吸收、发射和电化学实验以证明所有染料的推挽行为。 最后,DCH 1-6染料在 Grätzel 型太阳能电池中作为光敏剂进行测试,显示出低 PCE 值(在 0.10% 和 0.60% 之间),这是由于制备的染料的低 LUMO 能级导致TiO 2表面的电子注入不良.