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Two 1,8-naphthalimide derivatives of 7H-benzimidazo[2,1,-a]benz[de] isoquino- lin-7-one(1) and 4-bromo-7H-benzimidazo[2,1,-a]benz[de]isoquinolin-7-one(2) have been synthesized and characterized by elemental analysis, IR, 1H NMR, UV-Vis and fluorescence sp