“…6 (a) Solvatochromic study of compound 3i; (b) normalized fluorescence spectra of compound 3i in various solvents. Solvents: from left to right, 1, DCM; 2, DMF; 3, acetonitrile; 4, THF;5, chloroform; 6, acetone;7, ethyl acetate;8, dioxane;9, DMSO; and 10, ethanol.…”