Chromoionophores, optical sensors containing them and a method for determining the presence of alkali metal cations or of a base
US5599913A · kind A · utility
Inventors
Key dates
| Filing date | Mar 28, 1995 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | Mar 28, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/174614
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
New chromoionophores of the formula IV ##STR1## wherein a=0-3, b=0 or 1, c =0 or 1, x=0 or 1, y=0 or 1, z=0 or 1, PA1 R', which may be the same or different in each aryl group, is H, halogen, hydrocarbyl, aryl, hydrocarbylaryl or a substituted derivative thereof; PA1 R, which may be the same or different, is hydrocarbyl, aryl, hydrocarbylaryl, or a substituted derivative thereof are useful in optical sensors or colourmetric reagents for clinical use particularly for lithium, When complexed with lithium, the chromoionophores of the invention and other calixarene derivatives can be used for detecting amines, particularly trimethylamine, as an indicator of fish spoilage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.