Imine-linked chemosensors for the detection of Zn2+ in biological samples

摘要: A chemosensor 1 with a long hydrocarbon chain and polar end group is synthesized by the simple condensation reaction of amine salicylaldehyde. used because its solubility in an aqueous surfactant solution, which ensures that it can be neutral water medium. The rationale for choosing aryl aldehyde –OH functionality based upon fact chelate ring consisting sp2 nitrogen donor always better selective recognition Zn2+. sensor shows binding to Zn2+ 1% Triton-X-100 solution. Binding 3 leads approximately 300% enhancement fluorescence intensity sensor, due combined effects excited state intramolecular proton transfer (ESIPT) inhibition photo-induced electron (PET) process group. emission profiles show some changes low high pH ranges, however remains stable range 4–9, makes appropriate use biological fluids.