Photoluminescent polymetalloles as chemical sensors
US7482168B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2002 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | May 4, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/17
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method to develop inexpensive inorganic polymeric sensors that can provide a sensitivity and selectivity for explosive nitroaromatic compounds. Selectivity is provided by the arrays of 12 different reactive fluorescent sensors to mimic the human olfactory system. The sensors are based on photoluminescence quenching of polymers containing metalloid-metalloid backbones such as Si—Si, Si—Ge, or Ge—Ge. The sensor employs a thin film of photoluminescent copolymers, which is stable in air, water, acids, common organic solvents, and even seawater containing bioorganisms. The detection method involves measurement of the quenching of photoluminescence of the polysilole by the analyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.