Synthèse, caractérisation et propriétés de nouveaux matériaux à base de Bore.

Abstract

The work presented in this thesis aims at the synthesis, the characterization by spectroscopic methods, the structural study by X-ray diffraction, as well as the investigation of the luminous properties of new boron-based compounds, using the acid salicylic, two amines, pyridine, boric acid and transition metals. Five boron-based compounds, including three non-metallic borates comprising an organic cation; and a salycilatoborate anion; and two oxoborates based on cobalt and zinc transition metals leading to a coordination complex and an inorganic polymer.  Diéthylammonium bis (2-oxidobenzoato- k2O1,O2) borate,  Propylammonium bis (2-oxidobenzoato- k2O1,O2) borate  Pyridinium bis(2-oxidobenzoato-k2O1,O2)-borate  Trans-(dichloro-bis(ethylenediamine)-cobalt(III)) chloride boric acid monohydrate  Borate de zinc B2O6Zn3 With the exception of the inorganic polymer, all compounds exhibit strong, medium and weak hydrogen bonds and / or π-π stacking type interactions. Analysis of the Hirshfeld surfaces of four compounds allowed us to perform a qualitative and quantitative structural study. Fluorescence analysis showed that all compounds except the inorganic polymer exhibit strong emission of blue, violet and red light, which is attributed to the π-π * and / or the presence of orthoboric acid molecules.