Estimation of Work Function of Photosensitive Dyes from their Polarograms, Electronic Spectra and HMO Calculations

Abstract

WE have previously defined the quasi-Fermi level ε_q−F and the hyper-redox potential E_hyper of a molecule as follows¹ where ε_lv and ε_ho are the lowest vacant and the highest occupied electronic energy levels of the molecule calculated by the HMO method (Hückel approximation method)² E_½ and E_max are its polarographic half-wave reduction potential and excitation energy, and C is constant. It was found that the difference in power of spectral sensitization of the photographic process among various dyes could be explained by the values of their ε_q−F and $E_{{\text{hyper}}^1}$.