Introduction p-Nitroanilines have elicited broad interest and application in the fields of materials and analytical sciences on account of their solvatochromism1-7 and nonlinearoptical (NLO) properties. 8-13 The relevant structural feature of these chemicals is their “push-pull” π-conjugated electron arrangement. A variety of substituted p-nitroanilines act as solvent-sensitive (solvatochromic) indicators. The solvent-dependent shifts of their ...