title: Physicochemical studies of bioactive heterocycles of some novel imidazole derivatives as sensitive NLO materials.
abstract: Some novel imidazole derivatives were developed as highly sensitive chemisensors for transition metal ions. A prominent fluorescence enhancement was found in the presence of transition metal ions such as Hg(2+), Pb(2+), Cu(2+), Zn(2+), Co(2+) and Fe(2+) and this was suggested to result from the suppression of radiationless transitions from the n-π* state in the chemisensors. By DFT calculation HOMO-LUMO energies were calculated, the electric dipole moment (μ) and the hyperpolarizability (β) of the investigated molecules have been studied experimentally and also theoretically. These synthesized molecules were found to have microscopic non-linear optical (NLO) behaviour with non-zero tensor components.
authors.affiliation: Department of Chemistry, Annamalai University, Annamalainagar, Tamilnadu, India. jtchalam2005@yahoo.co.in
authors.forename: Jayaraman
authors.initials: J
authors.lastname: Jayabharathi
authors.forename: Venugopal
authors.initials: V
authors.lastname: Thanikachalam
authors.forename: Natesan
authors.initials: N
authors.lastname: Srinivasan
authors.forename: Karunamoorthy
authors.initials: K
authors.lastname: Jayamoorthy
mesh_terms: D007093:Imidazoles / Q000737:chemistry*; D049449:Luminescence; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D013056:Spectrophotometry, Ultraviolet; D028561:Transition Elements / Q000032:analysis*
chemical_list: D007093:Imidazoles; D028561:Transition Elements