New luminescent crown ethers(1-3) were synthesized. N-(4`-benzo-15-crown-5)-2-hydroxybenzene-1-imine (1) were prepared by reaction of 4`-aminobenfo-lS-crown-5 and 2-hydmxybenzaldehyde. N-(4`-berHo-15-cmwn-5) -2-hydrufraphthalene-1-imine and N-(4`-benz...
New luminescent crown ethers(1-3) were synthesized. N-(4`-benzo-15-crown-5)-2-hydroxybenzene-1-imine (1) were prepared by reaction of 4`-aminobenfo-lS-crown-5 and 2-hydmxybenzaldehyde. N-(4`-berHo-15-cmwn-5) -2-hydrufraphthalene-1-imine and N-(4`-benzo-18-crown-6)-2-hydroxynaphthalene-1-imine (2, 3) were made by the reaction of 4`-aminobenzo-lS-crown-5, 4`-aminobenzo-18-crown-6 and 2-hydroxy-1-naphthaldehyde, respectively. Luminescence was increased by adding alkali metal ions. Luminescent 15-crown-5 render fluroscence emission intensity responsive to added Na^+ and, to a lesser extent, K^+.