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In recent years, carbon-based materials have been studied because of its potential properties and potential applications in the field of physics, chemistry, electronics and mechanics. A derivative of graphite is graphite oxide which although it was discovered over a century has aroused great interest since not only proved to be a precursor of low cost for obtaining graphene on a large scale if the oxygenated groups graphite oxide have allowed covalently funcionalizarlo in the presence of nitrogencontaining precursors such as organic amines. Covalent functionalization graphite oxide followed by reduction achieved be an effective way to modify their chemical structure and modulate its electrical properties. Few studies have focused on the study of oxide functionalized graphite unreduced, this causes the interest is to study the process of functionalization for which a number of organic compounds with amino groups which enabled by a reaction introduced cyclization formation benzimidazoles in the oxide structure of graphite. This work aims to functionalize graphite oxide analogs and derivatives o-phenylenediamine previously also serve as precursors for obtaining disubstituted benzimidazoles synthesized. Synthesis of o-phenylenediamine derivatives of o-nitroaniline left and o-phenylenediamine with 2-chloropyridine and 2-chloropyrimidine respectively. The reactions were carried out in conventional manner and microwave, characterization involved the determination of the melting points on a Fisher-Johns, Nuclear Magnetic Resonance 1H, 13C BRUKER 400MHz computer with DMSO-d6 as solvent and Infrared device transform Fourier which were performed in the solid state on a Bruker FT-IR ALPHA. Prior to functionalization graphite was oxidized by the method of treating the graphite Hummers modified with KMnO4 and H2SO4, and subsequently H2O2. Functionalization was carried sonicating oxide dispersion in deionized water graphite subsequently diluted organic compounds in small amounts of ethanol in the presence of polyphosphoric acid as catalyst and the suspension was heated for 24hrs were added. To better understand the process prior to functionalization reduction materials were characterized by the techniques of Fourier Transform Infrared, Raman, X-ray diffraction, thermogravimetric analysis and scanning electron microscopy. Finally electrochemical performance of the functionalized materials unreduced using Cyclic voltammetry technique is evaluated. graphite oxide with Nafion was impregnated in a glassy carbon electrode used as working electrode, a platinum wire as the auxiliary electrode and one silver as a reference electrode in a 1M aqueous H2SO4 solution as electrolyte. The results of oxides functionalized graphite indicate specific capacitance values up to fifty times greater in percent compared to graphite oxide unfunctionalized.

Síntesis y caracterización de óxido de grafito funcionalizado con derivados y análogos de o-fenilendiamina. Obtención de bencimidazoles