title: Fluorescence characteristics of aryl boronic acid derivate (PBA).
abstract: The absorption and fluorescence spectra of newly synthesized aryl boronic acid derivative namely Phenyl boronic acid (PBA) have been recorded in various solvents of different polarities. The ground state dipole moment of PBA was obtained from quantum chemical calculations. Solvatochromic correlations were used to estimate the ground state (μg) and excited state (μe) dipole moments. The excited state dipole moments are observed to be greater than the ground state dipole moments. Further, the ground and excited state dipole moments are not parallel but subtend by an angle of 70°. The changes in dipole moment (Δμ) were calculated both from solvatochromic shift method and microscopic solvent polarity parameter (ET(N)), and the values are compared. Solvent effects on the absorption and fluorescence spectra were quantified using Reichardt's and bulk solvent polarity parameters were complemented by the results of the Kamlet-Taft treatment.
authors.affiliation: Department of Physics, Government R G S P U College, Kittur 591115, Karnataka, India.
authors.forename: S S
authors.initials: SS
authors.lastname: Patil
authors.affiliation: Department of Physics, B V B College of Engg & Tech., Hubli 580031, Karnataka, India.
authors.forename: G V
authors.initials: GV
authors.lastname: Muddapur
authors.affiliation: Department of Physics, B V B College of Engg & Tech., Hubli 580031, Karnataka, India. Electronic address: patilnr23@gmail.com.
authors.forename: N R
authors.initials: NR
authors.lastname: Patil
authors.affiliation: Department of Physics, M S R Institute of Technology, Bangalore 560054, Karnataka, India. Electronic address: melavanki73@gmail.com.
authors.forename: R M
authors.initials: RM
authors.lastname: Melavanki
authors.affiliation: Department of Chemistry, R V College of Engineering, Bangalore 560059, Karnataka, India.
authors.forename: R A
authors.initials: RA
authors.lastname: Kusanur
mesh_terms: D001897:Boronic Acids / Q000737:chemistry*; D005453:Fluorescence; D008958:Models, Molecular; D011789:Quantum Theory; D012997:Solvents; D013050:Spectrometry, Fluorescence
chemical_list: D001897:Boronic Acids; D012997:Solvents; C010686:benzeneboronic acid
keywords: Angle between dipole moments; Boronic acid; DFT; Kamlet–Taft; Solvatochromic shift