Effect of solvents on the electronic absorption spectra of 9,14 dibenzo (a, c) phenazine and tribenzo (a, c, i) phenazine
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Date
2009
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Abstract
9,14-dibenzo (a, c) phenazine and tribenzo (a, c, i,) phenazine, were synthesized and solvent effect on
the electronic absorption spectra of the compounds were studied. In some aspects of the spectra, the
features of anthracene were carried into the spectrum of these synthesized phenazine derivatives with a
change in symmetry. The absorption spectra of the two compounds were red–shifted compared with
that of phenazine. Polar solvents shift the wavelength of absorption to the red relative to non-polar
solvents, thus revealing that the observed bands have more charged excited state. This suggests that
the transition is p p* transition.