Physicochemical studies of some novel Y-shaped imidazole derivatives – A sensitive chemisensor

Some novel Y-shaped imidazole derivatives were developed for highly sensitive chemisensors for transition metal ions. A prominent fluorescence enhancement was found in the presence of transition metal ions such as Hg2+, Pb2+ and Cu2+ and it is due to the suppression of radiationless transitions from the n–π* state in the chemisensors. The HOMO–LUMO energies, electric dipole moment (μ) and the first-hyperpolarizability (β) values of the investigated molecule have been studied theoretically which reveal that the synthesized molecules have microscopic non-linear optical (NLO) behaviour with non-zero values.

Novel Y-shaped imidazole derivatives were developed for highly sensitive chemisensors for transition metal ions. A prominent fluorescence enhancement was found in the presence of transition metal ions due to the suppression of radiationless transitions from the n–π* state in the chemisensors.Figure optionsDownload as PowerPoint slideHighlights
► A high efficient Y-shaped chemosensor was synthesized.
► Its structure, nature and properties are well studied and characterized.
► Metal binding block the radiationless n–π* transition.
► There exists a microscopic NLO behaviour.
► MEP diagram identifies the electrophilic and nucleophilic sites.