that of unsubstituted pyrene. Absorption maxima of mono-, bis-, tris-, and tetrakis(trimethylsilyl)pyrenes shifted to longer wavelength consecutively at intervals of 10 nm. Fluorescence intensities and lifetimes decreased in the order of Me3SiAr > Me3GeAr > Me3SnAr. Fluorescence intensity of 1,3,6,8-tetrakis(trimethylsilyl)pyrene was the largest among those of a series of pyrenes.
三甲基甲
硅烷基-、
三甲基锗基-和三甲基甲
锡烷基-取代的
芘的紫外吸收最大值比未取代的
芘的波长更长。单-、双-、三-和四(三甲基甲
硅烷基)
芘的吸收最大值以 10 nm 的间隔连续转移到更长的波长。荧光强度和寿命按 Me3SiAr > Me3GeAr > Me3SnAr 的顺序降低。1,3,6,8-四(三甲基甲
硅烷基)
芘的荧光强度是一系列
芘中最大的。