A UNIFIED THEORY OF UNIAXIALLY-STRETCHED AND BIAXIALLY-STRETCHED FILMMETHODS - 3-DIMENSIONAL REDUCED SPECTRA OF PERYLENE

A unified theory of uniaxially- and biaxially-stretched film methods h as been proposed. This theory allows the decomposition of the electron ic absorption spectrum into three-dimensional reduced spectra polarize d along the molecular orientation axes. A transformation theory has al so been proposed to transform these reduced spectra to the three-dimen sional reduced spectra polarized along the molecular axes, assuming th at there exist a pure band and an overlapping band in the spectrum. Th ese theories were applied to get the three-dimensional reduced spectra of perylene.