Verbitskiy Egor V, Schepochkin Aleksandr V, Makarova Nadezhda I, Dorogan Igor V, Metelitsa Anatoly V, Minkin Vladimir I, Kozyukhin Sergey A, Emets Victor V, Grindberg Vitaly A, Chupakhin Oleg N, Rusinov Gennady L, Charushin Valery N
I. Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, S. Kovalevskoy Str., 22, Ekaterinburg, 620137, Russia,
J Fluoresc. 2015 May;25(3):763-75. doi: 10.1007/s10895-015-1565-6. Epub 2015 Mar 31.
Novel donor-π-acceptor dyes bearing the pyrimidine unit as an electron-withdrawing group have been synthesized by using combination of two processes, based on the microwave-assisted Suzuki cross-coupling reaction and nucleophilic aromatic substitution of hydrogen. Spectral properties of the obtained dyes in six aprotic solvents of various polarities have been studied by ultraviolet-visible and fluorescence spectroscopy. In contrast to the absorption spectra, fluorescence emission spectra displayed a strong dependence from their solvent polarities. The nature of the observed long wavelength maxima has been elucidated by means of quantum chemical calculations. The electrochemical properties of these dyes have been investigated by using cyclic voltammetry, while their photovoltaic performance was evaluated by a device fabrication study. The experimental and calculation data show that all of the dyes can be regarded as potentially good photosensitizers for dye-sensitized solar cells.
通过微波辅助铃木交叉偶联反应和亲核芳香氢取代两种方法相结合，合成了以嘧啶单元作为吸电子基团的新型供体-π-受体染料。利用紫外可见光谱和荧光光谱研究了所得染料在六种不同极性非质子溶剂中的光谱性质。与吸收光谱不同，荧光发射光谱对溶剂极性表现出强烈依赖性。通过量子化学计算阐明了观察到的长波长最大值的性质。利用循环伏安法研究了这些染料的电化学性质，同时通过器件制备研究评估了它们的光伏性能。实验和计算数据表明，所有这些染料都可被视为染料敏化太阳能电池潜在的良好光敏剂。
