title: Physicochemical studies of some novel Y-shaped imidazole derivatives--a sensitive chemisensor.
abstract: 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 Hg(2+), Pb(2+) and Cu(2+) 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.
authors.affiliation: Department of Chemistry, Annamalai University, Annamalainagar 608 002, 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: Kumar Brindha
authors.initials: KB
authors.lastname: Devi
authors.forename: Natesan
authors.initials: N
authors.lastname: Srinivasan
mesh_terms: D002627:Chemistry, Physical / Q000379:methods*; D003300:Copper / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007093:Imidazoles / Q000737:chemistry*; D007477:Ions; D007854:Lead / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008628:Mercury / Q000737:chemistry; D008670:Metals / Q000737:chemistry*; D008956:Models, Chemical; D015233:Models, Statistical; D010777:Photochemistry / Q000379:methods; D010825:Physics / Q000379:methods; D011789:Quantum Theory; D012984:Software; D012997:Solvents; D013050:Spectrometry, Fluorescence / Q000379:methods
chemical_list: D007093:Imidazoles; D007477:Ions; D008670:Metals; D012997:Solvents; D007854:Lead; D003300:Copper; D008628:Mercury