Malachite green based radio-chromic compounds and radiation sensing systems incorporating the compounds
AssigneesBattelle Savannah River Alliance, LLC, University of Kentucky Research Foundation
InventorsAaron L. Washington, II, John T. Bobbitt, III, John E. Anthony, Brent Peters, James C. Nicholson
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Abstract
Derivatized malachite green leuco dyes for use in radio-chromic systems are described. The dyes have the following structure: in which Ar is a substituted phenyl or thiophene ring in which at least one substitution of the Ar ring is not ortho to the bond between the ring and the linking carbon, and in which R1, R2, R3, and R4 are independently selected from methyl, alkyl, or alkyl halide. The systems include the dyes in conjunction with an activator, e.g., a halogenated activator, and a carrier, e.g., a fluid carrier or an encapsulating polymeric matrix.
Claims13
A radio-chromic system comprising:
- a derivatized leuco dye having the following structure:
- in which
- R1, R2, R3, and R4 are independently selected from the group consisting of alkyl and alkyl halide,
- R5 and R9 are independently selected from the group consisting of H, C1 to C20 alkoxy, halogen, C1 to C20 halogen-functionalized alkyl, C1 to C20 alkylsilyl, sulfonyl;
- formyl, and carboxylate,
- R7 is selected from the group consisting of H, C1 to C20 alkoxy, halogen, C1 to C20 halogen-functionalized alkyl, C1 to C20 alkylsilyl, sulfonyl, formyl, and carboxylate, or said R7 includes a phenyl ring,
- R6 is C1 to C20 halogen-functionalized alkyl, and
- R8 is C1 to C20 halogen-functionalized alkyl;
- the radiochromic system further comprising a halogenated activator that forms a radical, a cationic species, or an anionic species upon absorption of radiation;
- and
- the radiochromic system further comprising a polymeric matrix.
Dependencies are inferred from the claim text.