Chemically sensitive, dimensionally-stable organosilicon material composition and techniques
AssigneeHewlett-Packard Company
InventorsGanapati R. Nauze, Robert R. Holloway, Darlene J. Spira-Solomon
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Abstract
A dimensionally-stable organosilicon material composition and method for producing the material composition including non-crosslinkable, continuous phase silicone with silica filler material dispersed therethrough, and having dissolved therein a variably-radiative material (e.g., ruthenium dye) responsive to the concentration of a selected analyte (e.g., oxygen), and the products of a reaction between water and a modifier material selected for establishing the sensitivity of said variably-radiative material to the selected analyte.
Claims11
A method of preparing a material composition having a sensing ability for analytes permeable to the material composition, said sensing ability dependent upon a concentration of the analytes, comprising the steps of:
- preparing a solution of a solvent vehicle;
- adding a variably radiative material to said solution effective for radiating in relationship to the concentration of the analytes;
- adding modifier material for effecting a desired modification in the relationship of said variably radiative material to the concentration of the analytes;
- adding silicone to said solution, wherein said silicone is not reactive to and does not crosslink with said modifier material;
- and
- adding silica to said solution to establish dimensional stability for said material composition upon removal from solution.
A method for preparing a variably-radiative, dimensionally stable organosilicon material composition for sensing oxygen concentrations, comprising the steps of:
- (1) dissolving silicone in a solvent vehicle;
- (2) dissolving a selected modifier material in said selected vehicle, for effecting a desired relationship between radiativity and oxygen concentration in said material composition;
- (3) adding a sufficient amount of silica to said solvent vehicle to establish dimensional stability for said material composition;
- and
- (4) adding a sufficient amount of a selected oxygen-sensitive, variably radiative material to said solvent vehicle to enable oxygen sensing.
A method of preparing a variably luminescent, dimensionally stable organosilicon material composition for sensing oxygen concentration, comprising the steps of:
- (1) dissolving a predetermined amount of silicone in chloroform with a selected amount of a modifier material to establish a predetermined range of luminescence in said material composition;
- (2) adding a sufficient amount of silica particles dimensionally to stabilize the material composition;
- and
- (3) adding a sufficient amount of oxygen-sensitive, variably luminescent material to permit sensing of oxygen concentration.
Dependencies are inferred from the claim text.