Process for the detection of molecular or ionic species
US4871680A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1987 |
| Grant date | Oct 3, 1989 |
| Priority date | — |
| Expiry date | Jul 2, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/19
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process and an apparatus for the detection of molecular or ionic species, comprising: PA0 (a) contacting a gaseous or liquid medium containing the species to be detected with a film comprising at least one monomolecular layer of amphiphilic compound chosen from among the tetracyanoquinodimethane (TCNQ) charge transfer complexes and the tetracyanoquinodimethane (TCNQ) salts, which conduct electricity or are precursors of electricity conducting charge transfer complexes and PA0 (b) determining the variation of one of the physical properties of the film. It is in particular possible to use layers of TCNQ alkyl-pyridinium, TCNQ alkyl-quinolinium, for detecting iodine, nitrogen oxides and fluoric compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.