Ground and excited state preferential solvation behaviour of 1,4-dihydroxy-3-methylanthracene-9,10-dione in DMFÂ +Â CCl4 binary system

► Preferential solvation of 1,4-dihydroxy-3-methylanthracene-9,10-dione (DHMAD) has been investigated using optical absorption and fluorescence emission techniques. ► Preferential solvation parameter shows that in dimethyl formamide (DMF) + carbon tetrachloride (CCl4) mixture, the DHMAD is preferentially solvated by DMF in the ground state. ► In the excited state DHMAD is preferentially solvated by CCl4 in DMF rich region and by DMF in CCl4 rich region.