Abstract
The absorbance, fluorescence and phosphorescence spectra of cellulose containing chemically substituted naphthoyl chromophores, substituted in different morphological positions in the cellulose structure, have been investigated. Tentative interpretations of the spectra have been put forward. Of particular interest is the vacuum ultra-violet fluorescence, which demonstrates that excitation energy transfer from the cellulose matrix to the naphthoyl chromophore, postulated previously to be the mechanism for the protective action afforded by dye and aromatic substitutents against photo- and γ-irradiation, is not significant in this spectral region.
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