AbstractA series of novel nitro-substituted ortho-analogs of POPOP was synthesized. Like the most of the other known compounds of this class, the synthesized molecules demonstrate high Stokes shift fluorescence emission owing to the planarization of their molecules at electronic excitation. Significant fluorescence quenching in polar solvents was described as the “energy gap law” action rather than the specific effect of the dialkylamino group excited state twisting.
摘要:合成了一系列新型的POPOP的硝基取代的邻位类似物。与该类其他已知化合物一样,由于电子激发时分子的平面化,合成分子表现出高Stokes位移荧光发射。在极性溶剂中,显著的荧光猝灭被描述为“能隙定律”作用,而不是二烷基氨基基团激发态扭曲的特定效应。