Knowledge Bank

The ($S1\leftarrow S0$) excitation and the single vibronic level fluorescence (SVLF) spectra of p-butoxyaniline, p-pentyloxyaniline, and p-hexyloxyaniline were recorded in a supersonic jet expansion apparatus. The band origin transitions for each of the compounds indicated the presence of multiple geometric isomers. The SVLF spectra will be discussed vis-a-vis the existence of the isomers of each of these, and the IVR dynamics in the p-alkoxyaniline series. The IVR dynamics will be compared with that $observeda$ in the first three members of the series viz. p-aminophenol, p-methoxyaniline, and p-ethoxyaniline.