Band theory vs. Exciton theory interpretations of x-ray spectra of oligomers and polymers

We interpret x-ray absorption and emission spectra of conjugated molecules from two conceptually different approaches, band theory and exciton theory. We use a few polymers and their associate oligomer sequences as test grounds to characterize and compare x-ray spectra simulated by these two approaches. © 1997 John Wiley & Sons, Inc.