boron and naphthalene

Topics: Boron; Boron Compounds; Bridged Bicyclo Compounds, Heterocyclic; Crystallography, X-Ray; Ions; Molecular Conformation; Naphthalenes

[structure: see text] A new boronic acid fluorescent on-off reporter compound (1) was synthesized. This fluorescent sensor shows a 41-fold emission intensity increase upon addition of 50 mM fructose in 0.1 M aqueous phosphate buffer at pH 7.4.

Topics: 1-Naphthylamine; Boron; Boronic Acids; Carbohydrates; Fluorescence; Hydrogen-Ion Concentration; Magnetic Resonance Spectroscopy; Molecular Structure; Naphthalenes; Spectrometry, Fluorescence; Titrimetry

This study has been performed to investigate the treatment of an industrial wastewater containing naphthalene- and anthraquinone-sulfonic acids, by direct and indirect electrolyses. The direct electrochemical oxidation has been carried out using boron-doped diamond and lead dioxide anodes, while the indirect electrolyses has been mediated by active chlorine electrogenerated on a platinum anode, or by hydrogen peroxide electrogenerated on a graphite felt cathode. For each type of electrolyses the effects of operating parameters, such as anode material, current density, chloride concentration, ferrous ions concentrations have been also investigated. Measurements of Chemical Oxygen Demand (COD) and colour fading have been used to compare the results of different electrolyses. Experimental data showed that the complete COD and colour removals have been obtained only by direct oxidation or by active chlorine mediated electrolyses. On the contrary using electrogenerated hydrogen peroxide the solution has been presented a residual COD and colour. In particular, it found that faster oxidation rate has been obtained by direct oxidation using a boron-doped diamond anodes at low current density.

Topics: Anthraquinones; Boron; Diamond; Electrochemistry; Hydrogen Peroxide; Lead; Naphthalenes; Oxidants; Oxidation-Reduction; Oxides; Water Purification