Vol. 7, Issue 2, Part B (2025)

The spectral properties, specifically absorption and fluorescence, of Acridone-based compounds dissolved in DMF at various concentrations were thoroughly analyzed. Critical optical characteristics, namely, the absorption coefficient and refractive index were measured. The results demonstrated that increasing concentration led to higher absorbance and reduced transmittance, which in turn caused a rise in both the absorption coefficient and the refractive index. Furthermore, fluorescence intensity was found to increase with concentration, accompanied by a red shift in the emission peak toward longer wavelengths.