Effects of node of wave function upon excited-state intramolecular proton transfer of hydroxyanthraquinones and aminoanthraquinones Original Research Article

The observed behavior concerning excited-state intramolecular proton transfer (ESIPT) of hydroxyanthraquinones and aminoanthraquinones can be explained by considering the nodal pattern of the wave function. Substitution and solvent effects on ESIPT of 1-(acylamino)anthraquinones can also be explained similarly. The exact nature of ESIPT is the deformation of the aromatic ring skeleton instead of the motion of the hydrogen nucleus.