Conjugated acyclic arylamine derivatives, N-(4-methylphenyl)-N-(2-methyl-1-phenylpropyl)amine and N-(4-methoxyphenyl)-N-(2-methyl-1-phenylpropyl)amine, have been synthesized and characterized. Their photophysical properties have been investigated in polar methanol and non-polar cyclohexane solutions, and in PS and PMMA polymer matrices. The influence of the environment polarity as well as of the substituent in para-position of the aryl on the absorption, emission spectra and the fluorescence quantum yield has been studied. In the absorption and emission spectra, the observed absorption and emission band maxima were red shifted and the observed quantum yield was higher in the polar solution in comparison with the non-polar solution or polymer matrices. The distance of short- and long-wavelength absorption maxima in the methoxy derivative was larger and the emission band was red shifted in comparison with the methyl derivative. Chemical and photochemical oxidation of the prepared amines gives unstable nitroxides. High intramolecular quenching was observed in polymer matrix after photochemical oxidation of the amines.
已合成和表征了共轭非环芳胺衍生物,N-(4-甲基苯基)-N-(2-甲基-1-苯基丙基)胺和N-(4-甲氧基苯基)-N-(2-甲基-1-苯基丙基)胺。它们的光物理性质在极性甲醇和非极性环己烷溶液以及PS和PMMA聚合物基质中进行了研究。研究了环境极性以及芳香族物质对吸收、发射光谱和荧光量子产率的影响。在吸收和发射光谱中,观察到的吸收和发射带最大值向红移,与非极性溶液或聚合物基质相比,观察到的量子产率在极性溶液中较高。甲氧基衍生物中短波和长波吸收最大值的距离较大,与甲基衍生物相比,发射带向红移。制备的胺的化学和光化学氧化产生不稳定的亚硝基。在胺的光化学氧化后,在聚合物基质中观察到高的分子内猝灭。