Process for producing functionalized carbon nanotubes ntc-func that have thiol -sh groups
NOVELTY – Functionalized carbon nanotubes production involves purifying carbon nanotubes by adding hydrochloric acid in resulting reaction mixture remains in a reflux system under stirring for 6 hours at 110 degrees C to obtain purified carbon nanotubes. The obtained carbon nanotubes are reacted with lithium aluminum hydride to form carbanions on surface of the carbon nanotubes. The obtained carbon nanotubes are endowed with carbanions on its surface, and then treated with elemental sulfur to obtain carbon nanotubes with sulfide groups. USE – Method for producing functionalized carbon nanotubes used in products, uses as reaction input for binding natural or synthetic molecules and macromolecules, such as carbohydrates, polymers, amino acids, peptides, proteins, enzymes and antibodies, for forming multifunctional hybrid systems for delivering drugs and agrochemicals, and for use as basis for obtaining nanocomposite (all claimed). ADVANTAGE – The method produces functionalized single-walled, double-walled or multi-walled carbon nanotubes in a simple manner with enhanced quality and dispersion rate in water about 5 mg/ml. DETAILED DESCRIPTION – Functionalized carbon nanotubes production involves purifying carbon nanotubes by adding hydrochloric acid in resulting reaction mixture remains in a reflux system under stirring for 6 hours at 110 degrees C to obtain purified carbon nanotubes. The obtained carbon nanotubes are reacted with lithium aluminum hydride to form carbanions on surface of the carbon nanotubes. The obtained carbon nanotubes are endowed with carbanions on its surface, and then treated with elemental sulfur to obtain carbon nanotubes with sulfide groups. The obtained sulfide groups carbon nanotubes are treated with hydrochloric acid to form thiol groups. The obtained carbon nanotubes containing thiol groups on their surfaces are washed with tetrahydrofuran and distilled water, and then dried with hydride to form functionalized carbon nanotubes. DESCRIPTION OF DRAWING(S) – The drawing shows a schematic representation of the carbanion formation on surface of the carbon nanotubes.
Main Application Field
A85 (Electrical applications.); B07 (General – tablets, dispensers, catheters (excluding drainage and angioplasty), encapsulation etc, but not systems for administration of blood or saline or IV feeding etc.); C07 (Apparatus, formulation, general. including veterinary syringes, general formulations where the active compound is not central to the invention (e.g. wettable powders) and analysis.); D16 (Fermentation industry – including fermentation equipment, brewing, yeast production, production of pharmaceuticals and other chemicals by fermentation, microbiology, production of vaccines and antibodies, cell and tissue culture and genetic engineering.); E36 (Non-metallic elements, semi-metals (Se, Te, B, Si) and their compounds (except for E35).); B04 (Natural products and polymers. Including testing of body fluids (other than blood typing or cell counting), pharmaceuticals or veterinary compounds of unknown structure, testing of microorganisms for pathogenicity, testing of chemicals for mutagenicity or human toxicity and fermentative production of DNA or RNA. General compositions.)
INVENTORS:
ALVES OSWALDO LUIZ
DO NASCIMENTO RAFAELLA OLIVEIRA
MARTINEZ DIEGO STÉFANI TEODORO
RODRIGUES OSCAR ENDRIGO DORNELES
680_FUNCIONALIZADO
Patent number: WO2014117234-A1
PATENT STATUS:
For information contact Inova Unicamp
FOR ADDITIONAL INFORMATION:
parcerias@inova.unicamp.br
+55 (19) 3521-5207 / 2607
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