“…1,2 As a close analogue of perylene diimide, 1,8-naphthalimide offers many excellent properties due to its ease of functionalization at different positions such as - bay (C-3, C-6), - peri (C-4, C-5), both - bay and - peri (C-3, C-4, C-5, C-6) and N -imide positions. 3 1,8-Naphthalimide has found applications in many areas of chemistry such as molecular recognition (sensing of metal ions, anions, biomolecules and neutral molecules in 50–90% aqueous medium); 4–6 imaging of biomedically relevant species in different organelles such as lysosomes, mitochondria; 7,8 tissue imaging; 9 dyes for colouring synthetic fibres, 10 mechanochromic and solvatochromic dyes; 11,12 fluorescent dyes for solar energy collectors and organic light emitting diodes, 13–15 and nematic liquid crystals for electro optical displays. 16 1,8-Naphthalimide and its metal complexes have been used in antibacterial, antifungal, antiviral, and anticancer applications and as DNA intercalators.…”