Chemoselective dendrimeric compounds for use in chemical sensors
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsEric Houser, Robert McGill
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Abstract
The present invention provides a device for selective molecular recognition, the device comprising a sensing portion, wherein said sensing portion includes a substrate having coated thereon a layer comprising a dendrimeric compound having: (1) a core portion; (2) at least one unsaturated arms extending radially from the core portion; and (3) at least one halogen substituted alcohol substituted at the terminus, the interior, or both of each; The device is used to detect the molecules of a hydrogen bond accepting vapor such as organophosphorus or nitroaromatic species.
Claims27
A dendrimeric compound comprising:
- a core portion;
- at least one arm extending radially from said core portion;
- at least one branch extending from each said arm;
- and
- each said arm having at least one halogen substituted alcohol positioned at the terminus of at least one of said branches.
A solution for preparing a chemical vapor sensor comprising:
- an amount of a dendrimeric compound having:
- a core portion;
- at least one arm extending radially from said core portion;
- at least one branch extending from each said arm;
- each said arm having at least one halogen substituted alcohol positioned at the terminus of at least one of said branches;
- effective to enhance the sensitivity of said sensor to hydrogen bond accepting vapors and nitroaromatic compounds;
- and
- a solvent for said compound.
A device for selective molecular recognition, said device comprising a sensing portion, wherein said sensing portion includes a substrate having coated thereon a layer, said layer comprising a dendrimeric compound having:
- a core portion;
- at least one arm extending radially from said core portion;
- at least one branch extending from each said arm;
- each said arm having at least one halogen substituted alcohol positioned at the terminus of at least one of said branches.
A method of detecting the molecules of a hydrogen bond accepting vapor, comprising the steps of:
- (a) contacting the molecules of said vapor with a device comprising a sensing portion, wherein said sensing portion includes a substrate having coated thereon a layer, said layer comprising a dendrimeric compound having:
- a core portion;
- at least one arm extending radially from said core portion;
- at least one branch extending from each said arm;
- and
- each said arm having at least one halogen substituted alcohol positioned at the terminus of at least one of said branches;
- (b) collecting said molecules on said layer, wherein said molecules alter a specific physical property of said layer;
- and
- (c) detecting the amount of change in the physical property from before said contacting step (a) and after said collecting step (b).
Dependencies are inferred from the claim text.