A N-substituted naphthalimide derivative N-[2-(2-hydroxylethylamino)-ethyl]-1, 8- naphthalimide (HEAN), which contains potential acceptors for hydrogen bond, was synthesized and fully characterized. The fluorescence and UV/vis behaviors of HEAN in different solvents were investigated, and its Stokes shift value and fluorescence quantum yield (Φf) in each solvent were determined. A remarkable fluorescence enhancement of ...