Solvatochromic photoluminescence investigation of functional Schiff-bases: A systematic study of substituent effects

In this paper a series of Schiff-bases, synthesized mechanochemically, were studied for their delicate changes in absorption and emission spectra by altering substituents and solvents at different concentrations. UV-vis and photoluminescence of aromatic salicylideneaniline Schiff-base (ASASB) derivatives with substituents ranging from electron donating to electron withdrawing (−CH3, −Cl, −Br, −I, −C(O)CH3, −C(O)OC2H5, −CN), and ring nitrogen containing derivatives were studied in solvents of different dielectric constant (n-hexane, toluene, ethyl acetate, THF, ethanol and methanol).

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