Media.Player

Sensitive Chemical Sensor To Detect A Broad Range Of Nitrogen-Based Explosives

Technology Benefits

Sensitve Rapid Low cost Versatile synthetic approach Single polymer Detects wide range of trace explosives Detects explosives on a variety of surfaces

Technology Application

Counter terrorism Forensic (e.g. examination of post blast residue) Screening baggage, personnel, or cargo Facility protection

Detailed Technology Description

This technology describes the synthesis of a polymer and a method for detecting a broad range of nitrogen-based explosives including nitraromatic based, nitramine based and nitrate ester-based high explosives.  The polymer is excited at an appropriate range using a UV-B, UV-C, black light, LED or other illumination source.  If an explosive has bound the polymer, then the polymer fluorescence will be quenched.

Supplementary Information

Patent Number: US8557595B2
Application Number: US2009523104A
Inventor: Trogler, William C. | Sanchez, Jason
Priority Date: 29 Jan 2007
Priority Number: US8557595B2
Application Date: 11 Mar 2010
Publication Date: 15 Oct 2013
IPC Current: G01N003322 | G01N002164
US Class: 436106 | 42208206 | 42208207 | 42208208 | 422425 | 436107 | 436166 | 436167 | 436172
Assignee Applicant: The Regents of the University of California
Title: Fluorescence detection of nitrogen-containing explosives and blue organic LED
Usefulness: Fluorescence detection of nitrogen-containing explosives and blue organic LED
Summary: A sensor useful for detecting nitrogen containing high explosives (claimed) including nitroaromatic-, nitrate ester-, and nitramine-based explosives, for safety screenings, including screenings of cargo, facilities or people, and forensic investigations.
Novelty: Sensor for detecting nitrogen containing high explosives e.g. useful in forensic investigation, comprises substrate, and blue-photoluminescent metallofluorene copolymer comprising vinyl bridged silafluorene copolymer coated on the substrate

Industry

Optics

Sub Category

LED/OLED

Application No.

8557595

Others

State Of Development

This technology is the subject of a patent application, and is being offered exclusively or nonexclusively for US and/or worldwide territories.

There is an initial working prototype.

Related Materials

Trogler Group Web Page

Tech ID/UC Case

20583/2007-074-0

Related Cases

2007-074-0

*Abstract

Detecting ultra trace explosive analytes is important for forensic or counterterrorism  applications as well as for personnel, baggage, or cargo screening.  However, metal detectors frequently fail to detect explosives (such as those in the plastic casing of modern land mines); dogs are expensive and difficult to maintain: and other methods, including gas chromatography coupled with mass spectrometry, surface-enhanced Raman, energy dispersive X-ray diffraction, for example, are highly selective, but are expensive and not easily adapted to a small, low-power package.  Therefore, chemical sensors are preferable to other detection devices.

*IP Issue Date

Oct 15, 2013

*Principal Investigator

Name: Jason Sanchez

Department:

Name: William Trogler

Department:

Country/Region

USA