Time-resolved Infrared Spectroscopy of P1 and P1-bodipy

These time-resolved infrared (TRIR) absorption spectra were collected at the Ultra facility and the Rutherford Applelton Laboratory to determine the structure and lifetime of the intermediates formed on photoexcitation of two organic donor-π-acceptor dyes adsorbed to the surface of NiO. The donor and π-linker of both dyes is triphenylamine and thiophene but the acceptors differ, maleonitrile (1) and bodipy (2). Despite their structural similarities, dye 1 outperforms 2 significantly in devices. Strong transient bands in the fingerprint region (1 and 2) and nitrile region (2300-2000 cm–1) for 1 enabled us to monitor the structure of the excited states in solution or adsorbed on NiO (in the absence and presence of electrolyte) and the corresponding kinetics, which on a ps-ns timescale. The results are consistent with rapid (

本数据集收录了在超导设施和Rutherford Appleton实验室收集的时间分辨红外（TRIR）吸收光谱，旨在确定两种有机供体-π-受体染料在NiO表面吸附并经光激发形成的中间体的结构和寿命。两种染料的供体和π桥接基团均为三苯胺和噻吩，但受体不同，分别为马来腈（1）和 bodipy（2）。尽管它们在结构上相似，染料1在器件性能上显著优于染料2。染料1在指纹区域（1和2）及氰基区域（2300-2000 cm–1）的强瞬态带，使我们能够监测溶液或吸附在NiO表面（电解质存在与否）的激发态结构及其相应的动力学，这些动力学在皮秒至纳秒的时间尺度上。研究结果与快速（