Photoactive energetic materials

Patent metadata

Field	Value
Publication number	US-10174064-B2
Application number	US-201815868562-A
Country	US
Kind code	B2
Filing date	Jan 11, 2018
Priority date	May 15, 2014
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

Energetic materials that are photoactive or believed to be photoactive may include a conventional explosive (e.g. PETN, nitroglycerine) derivatized with an energetic UV-absorbing and/or VIS-absorbing chromophore such as 1,2,4,5-tetrazine or 1,3,5-triazine. Absorption of laser light having a suitably chosen wavelength may result in photodissociation, decomposition, and explosive release of energy. These materials may be used as ligands to form complexes. Coordination compounds include such complexes with counterions. Some having the formula M(L)n2+ were synthesized, wherein M is a transition metal and L is a ligand and n is 2 or 3. These may be photoactive upon exposure to a laser light beam having an appropriate wavelength of UV light, near-IR and/or visible light. Photoactive materials also include coordination compounds bearing non-energetic ligands; in this case, the counterion may be an oxidant such as perchlorate.

First claim

What is claimed is:

1. A compound of the formula

wherein X is selected from —OCH(ONO 2 ) 2 or

or of the formula

wherein X is selected from —OCH 2 C(CH 2 ONO 2 ) 3 , —OCH 2 C((F)(NO 2 ) 2 ), —OCH(ONO 2 ) 2 ,

and wherein M is

2. A coordination compound comprising:
a cationic complex comprising a transition metal center and one or more ligands coordinated to the transition metal center, wherein the one or more ligands comprise a 1,2,4,5-tetrazine ring and one or more explosive pendant groups covalently bonded to the 1,2,4,5-tetrazine ring or a 1,3,5-triazine ring and one or more explosive pendant groups covalently bonded to the 1,3,5-triazine ring;
and
a counterion,

wherein the one or more ligands have the formula:

wherein X is selected from

 OCH 2 C(CH 2 ONO 2 ) 3 , OH, or NH 2 ; and
wherein Y is selected from

or have the formula:

wherein X is selected from —OCH 2 C(CH 2 ONO 2 ) 3 , —OCH 2 C((F)(NO 2 ) 2 ), —OCH(ONO 2 ) 2 ,

or have the formula:

wherein X is selected from —OCH 2 C(CH 2 ONO 2 ) 3 , —OCH 2 C((F)(NO 2 ) 2 ), —OCH(ONO 2 ) 2 ,

 and
wherein M is

3. The coordination compound of claim 2 , wherein the transition metal center comprises Fe, Cu, Ni, or Co.

4. The coordination compound of claim 2 ,
wherein the transition metal is Fe,
wherein the cationic complex comprises the formula Fe(II)(L) 3 2+ , wherein L is a ligand selected from

5. The coordination compound of claim 2 ,
wherein the transition metal is selected from Cu, Co, and Ni,
wherein the transition metal is bonded to two ligands each of which ligands has the formula

6. The coordination compound of claim 2 , wherein the counterion is selected from tetrafluoroborate (BF 4 −1 ), nitrate (NO 3 −1 ), perchlorate (ClO 4 −1 ), sulfate (SO 4 −2 ), phosphate (PO 4 3− ), and carbonate (CO 3 2− ).

Assignees

• Los Alamos Nat Security Llc
• Triad Nat Security Llc

Inventors

• Chavez David E
• Hanson Susan Kloek
• Scharff Robert Jason
• Veauthier Jacqueline Marie
• Myers Thomas Winfield

Classifications

• C06B25/34

  the compound being a nitrated acyclic, alicyclic or heterocyclic amine · CPC title

• C07D257/08

  Six-membered rings · CPC title

• C07F1/08

  Copper compounds · CPC title

• C07F15/025

  without a metal-carbon linkage · CPC title

• C06C9/00

  Chemical contact igniters; Chemical lighters · CPC title