USA As Represented by Secretary of the Navy

US Government As Represented by the Secretary of the Army

Farhad Forohar

Paritosh R Dave

Magdy Bichay

William M Koppes

Victor Bellitto

Sury Iyer

Craig Whitaker

Yury Gogotsi

Clifford D Bedford

Christopher Wilhelm

Michael Chaykovsky

Theodore Axenrod

Vasant Shivran Joshi

Stanley Caulder

Denisse Soto

Valarie Pelletier

A method of substituting an azide for hydrogen bonded to a tertiary carbon atom is provided. A liquid mixture in an oxygen-free environment has spaced-apart carbon and platinum electrodes disposed therein. The liquid mixture includes a solvent, ammonium azide, and a base material having at least one tertiary carbon atom with hydrogen bonded thereto. An electric current is applied to the electrodes where the liquid mixture undergoes a reaction. The electrochemically-induced reaction yields a liquid product and a solid product. The liquid product includes the solvent and a constituent having at least one tertiary carbon atom with an azide bonded thereto.

Method of electrochemical substitution of azides for hydrogen on tertiary carbons

A new azido compound, 5-amino-6-chloro-2,4-diazido-pyrimidine, and a process for synthesizing. The synthesis may include reacting 5-amino-2,4,6-trichloropyrimidine and sodium azide. There is an excess molar amount of sodium azide for each chloro fractional molar amount on the 5-amino-2,4,6-trichloropyrimidine. The synthesis is a two phase reaction that is a dispersion. The 5-amino-2,4,6-trichloropyrimidine dissolved in acetone is a liquid phase, and the sodium azide is insoluble in acetone and is a solid phase, that is present in excess of chemical equivalents. The reaction product is soluble in acetone, and the reaction by-product, sodium chloride is also insoluble in acetone, and the crude yield is about 92%. Unreacted sodium azide and formed sodium chloride are removed by filtration.

Synthesis of aminopyrimidine-based energetic materials

A composite electrode includes a sheet of carbon nanotubes (CNTs) and an electrically conductive metal. The sheet of CNTs include a surface region where carbon atoms are available. The metal is chemically bonded to at least a portion of the carbon atoms whereby a metal carbide is defined.

Carbon nanotube based composite electrode

The invention concerns copper azide containing carbon nanotubes. The invention also concerns methods of producing such nanotubes by placing CuO nanoparticles within carbon nanotubes to produce CuO-containing carbon nanotubes, contacting CuO-containing carbon nanotubes with hydrogen to produce reduced nanotubes; and contacting the reduced nanotubes with hydrazoic acid to produce copper azide containing carbon nanotubes.

Carbon nanotubes containing confined copper azide

The present invention relates generally to carbon nanotubes, and more particularly to the interaction of single wall carbon nanotubes with hydrazoic acid to introduce energetic azide groups into the nanotubes to form activated carbon nanotubes.

Single walled carbon nanotubes activated with hydrazoic acid

The present invention relates generally to methods of making carbon nanotubes, and more particularly to the interaction of single wall carbon nanotubes with hydrazoic acid to introduce energetic azide groups into the nanotubes to form activated carbon nanotubes.

Method for making single walled carbon nanotubes by activation with hydrazoic acid

The present invention relates to a carbon nanotube that contains nitrogen based functional groups (such as nitro, nitroso, N-oxide, oxime, hydroxylamine, diazo, azo, and azide) that are covalently attached to lattice carbons of the carbon nanotube, directly or via a chemical linker. The present invention also relates to methods for the preparation of the carbon nanotube from an amino-functionalized carbon nanotube via an amino oxidation reaction. The synthetic methods of the present invention allow the nitrogen based functional groups to be attached selectively to one of two distinct regions of the carbon nanotube, the ends or the sidewall, and thus enable the synthesis of a carbon nanotube having nitrogen based functional groups substantially concentrated on either the ends or the sidewall of the carbon nanotube.

Functionalization of carbon nanotubes

The present invention relates to methods for the preparation of a carbon nanotube from an amino-functionalized carbon nanotube via an amino oxidation reaction. The carbon nanotube includes nitrogen based functional groups that are covalently attached to lattice carbons of the carbon nanotube, directly or via a chemical linker. The synthetic methods of the present invention allow the nitrogen based functional groups to be attached selectively to one of two distinct regions of the carbon nanotube, and thus enable the synthesis of a carbon nanotube having nitrogen based functional groups substantially concentrated on the ends and/or the sidewall of the carbon nanotube.

Method of making functionalized carbon nanotubes

A novel cyclotetraphosphazene compound, 1,1-diamino-3,3,5,5,7,7-hexaazidocyclotetraphosphazene, is disclosed which has application as an energetic compound and percussion primer. Also disclosed is a method of preparing the compound.

Substituted cyclotetraphophazene compound and method of producing the same

A novel cyclotetraphosphazene compound, 1,5-diamino-1,3,3,5,7,7-hexaazidocyclotetraphosphazene, is disclosed which has application as an energetic compound. Also disclosed is a method of preparing the compound.

Substituted cyclotetraphosphazene compound and method of producing the same

Overall, the invention provides the chemistry for the compounds and for the processes to prepare compounds derived from 1,5-diazacyclooctanes. This makes available high density, high melting point, thermally stable small and medium ring nitrogen heterocycles that may also contain N-nitro, C-nitro or other functional groups. The compounds include cyclooctanes, bicyclo octanes, propellanes and functionalized derivatives of the above compounds. The preparations can include transannular cyclizations. The materials have several applications; e.g., the polynitro compounds are energetic materials.

Compounds of 1,5-disubstituted-3,7 diaza bicyclo �3.3.0! octanes and

Energetic nitramine containing cyclotriphosphazene which include 1,1,3,3,-tris-spiro(N,N'-dinitroethylenediamino)cyclotriphosphazene, 1,1-spiro(ethylenediamino)-3,3,5,5-bis-spiro(N,N'-dinitroethylenediamino)c yclotriphosphazene, 1,1,3,3-bis-spiro(N,N'-dinitroethylenediamino)-5,5-dichlorocyclotriphospha zene, 1,1,3,3-bis-spiro(N,N'-dinitroethylenediamino)-5,5-difluorocyclotriphospha zene, 1,1-spiro(N,N'-dinitroethylenediamino)-3,3,5,5-bis-spiro(ethylenediamino)c yclotriphosphazene, 1,1-spiro(ethylenediamino)-3,3-spiro(N,N'-dinitroethylenediamino)-5,5-dich lorocyclotriphosphazene, 1,1-spiro(ethylenediamino)-3,3-spiro(N,N'-dinitroethylenediamino)-5,5-difl uorocyclotriphosphazene, 1,1-spiro(N,N'-dinitroethylenediamino)-3,3,5,5-tetrachlorocyclotriphosphaz ene, and 1,1-spiro(N,N'-dinitroethylenediamino)-3,3,5,5-tetrafluorocyclotriphosphaz ene, which can be used in explosive compositions.

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La Plata, MD, United States of America

Farhad Forohar