Organic chemical sensor with microporous organosilicate material
Assignee3M Innovative Properties Company
InventorsJohn Christopher Thomas, Neal A. Rakow, John E. Trend
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Abstract
Multi-layered optical sensor films are disclosed. The sensor films include a first reflective layer, a detection layer over the reflective layer, and optionally a second reflective layer over the detection layer. The detection layer contains a hydrophobic, amorphous, substantially microporous, analyte-sensitive organosilicate composition. The analyte-sensitive organosilicate composition provides an optical change in the film upon analyte exposure.
Claims29
A sensor comprising:
- a substantially continuous first reflective layer;
- a detection layer over the first reflective layer, the detection layer comprising a substantially microporous, amorphous, hydrophobic, analyte-responsive organosilicate material, wherein the substantially microporous, amorphous, hydrophobic, analyte-responsive organosilicate material comprises micropores which define a pore volume.
An array comprising two or more sensors, wherein the sensors comprise:
- a substantially continuous first reflective layer;
- a detection layer over the first reflective layer, the detection layer comprising a substantially microporous, amorphous, hydrophobic, analyte-responsive organosilicate material, wherein the substantially microporous, amorphous, hydrophobic, analyte-responsive organosilicate material comprises micropores which define a pore volume.
A device comprising:
- a substantially continuous first reflective layer;
- a detection layer over the first reflective layer, the detection layer comprising a substantially microporous, amorphous, hydrophobic, analyte-responsive organosilicate material, wherein the substantially microporous, amorphous, hydrophobic, analyte-responsive organosilicate material comprises micropores which define a pore volume;
- and
- a light source.
A method of detecting the presence or absence of an analyte, the method comprising:
- providing a sensor comprising:
- a substantially continuous first reflective layer;
- a detection layer over the first reflective layer, the detection layer comprising a substantially microporous, amorphous, hydrophobic, analyte-responsive organosilicate material, wherein the substantially microporous, amorphous, hydrophobic, analyte-responsive organosilicate material comprises micropores which define a pore volume;
- providing a light source;
- contacting the sensor with a medium that may contain an analyte;
- and
- monitoring the sensor for a change in optical properties.
Dependencies are inferred from the claim text.