Jason V Sanchez

US Patent:

7927881, Apr 19, 2011

Filed:

Aug 25, 2005

Appl. No.:

11/990832

Inventors:

William C. Trogler - Del Mar CA, US
Sara A Urbas - San Diego CA, US
Sarah J. Toal - Rockville MD, US
Jason Sanchez - La Jolla CA, US

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

G01N 33/44

US Classification:

436 85, 436 91, 436 92, 436164, 436172, 436177, 436178

Abstract:

A method for detecting an analyze that may be present in ambient air, bound to a surface or as part of complex aqueous media that includes providing a metallole-containing polymer or copolymer, exposing the polymer or copolymer to a suspected analyze or a system suspected of including the analyze, and measuring a quenching of photoluminescence of the metallole-containing polymer or copolymer exposed to the system. Also included is a solid state inorganic-organic polymer sensor for detecting nitroaromatic compounds that includes a substrate and a thin film of a metallole-containing polymer or copolymer deposited on said substrate.

US Patent:

8557595, Oct 15, 2013

Filed:

Jan 29, 2008

Appl. No.:

12/523104

Inventors:

William C. Trogler - Del Mar CA, US
Jason Sanchez - The Woodlands TX, US

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

G01N 33/22
G01N 21/64

US Classification:

436106, 422425, 422 8206, 422 8207, 422 8208, 436107, 436166, 436167, 436172

Abstract:

The invention provides a sensor for detecting nitrogen containing high explosives. The sensor includes a substrate and a blue-photoluminescent metallofluorene copolymer to be carried on said substrate during testing for nitrogen containing high explosives. The copolymer is preferably a blue-photoluminescent metallofluorene copolymer, and preferably is a vinyl bridged silafluorene copolymer. A method for detecting nitrogen containing high explosives involves exposing a copolymer to an analyte, preferably by spraying the copolymer or otherwise coating the substrate after it has been exposed to analyte and then exciting the copolymer to luminesce. The copolymer is observed for fluorescence quenching, which can be through human or electronic observation. The invention also provides for synthesis of a vinyl bridged silafluorene polymer by providing diethynylmetallofluorene and dihydrosilafluorene as precursors and conducting catalytic hydrosilation of the precursors. In a blue emitting organic light emitting diode of the invention, an emitting layer is blue-photoluminescent metallofluorene copolymer.

US Patent:

8557596, Oct 15, 2013

Filed:

Jul 10, 2008

Appl. No.:

12/667736

Inventors:

William C. Trogler - Del Mar CA, US
Jason Sanchez - The Woodlands TX, US

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

G01N 33/22
G01N 21/64

US Classification:

436106, 436107, 436166, 436167, 436172, 422425, 422 8206, 422 8207, 422 8208

Abstract:

The invention provides a sensor for detecting nitrogen containing high explosives. The sensor includes a substrate and a blue-photoluminescent metallofluorene copolymer to be carried on said substrate during testing for nitrogen containing high explosives. The copolymer is preferably a blue-photoluminescent metallofluorene copolymer, and preferably is a vinyl bridged silafluorene copolymer. A method for detecting nitrogen containing high explosives involves exposing a copolymer to an analyte, preferably by spraying the copolymer or otherwise coating the substrate after it has been exposed to analyte and then exciting the copolymer to luminesce. The copolymer is observed for fluorescence quenching, which can be through human or electronic observation. The invention also provides for synthesis of a vinyl bridged silafluorene polymer by providing diethynylmetallofluorene and dihydrosilafluorene as precursors and conducting catalytic hydrosilation of the precursors. In a blue emitting organic light emitting diode of the invention, an emitting layer is blue-photoluminescent metallofluorene copolymer.

US Patent:

20100291698, Nov 18, 2010

Filed:

May 1, 2007

Appl. No.:

12/298075

Inventors:

William C. Trogler - Del Mar CA, US
Jason Sanchez - San Diego CA, US
Sara Toal - Mission Viejo CA, US
Zheng Wang - La Jolla CA, US
Regina E. Dugan - Rockville MD, US

Assignee:

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA - Oakland CA

International Classification:

G01N 33/52

US Classification:

436110, 436106, 436111

Abstract:

A method of the invention is a method of detecting nitramines and nitrate esters believed to be present on a sampling substrate. In the method, a sampling substrate is exposed to a first reagent that is formulated to react with nitramine- and nitrate ester-type explosives to release nitrite. The sampling substrate is then exposed to a second reagent that contains an acid to react with the nitrite and a diaminoaromatic present in either the first or second reagent, to form a triazole that will luminesce. Another method of the invention combines this process for nitramine- and nitrate ester-based explosives detection with a technique to detect nitroaromatic-based explosives using luminescent polymers, for a three-step process for the detection of explosives in these three classes.