Patent · US Expired

Hemispherands in ion-selective compositions

US4933070A · kind A · utility

1Cited by
18References
22Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 11, 1986
Grant dateJun 12, 1990
Priority date—
Expiry dateJun 11, 2006

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N27/3335
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Ion-selective compositions which comprise an ion carrier, a compound capable of solvating the ion carrier, and a supporting matrix are disclosed. The ion carrier according to the invention is a lipophilic hemispherand compound. These compositions are particularly useful in ion-selective electrodes. Such an electrode is capable of selectively transporting a first ion in preference to a second ion. Particularly useful hemispherands have a .DELTA.G of complexation with the first ion which is at least 0.3 Kcal/mole greater than the .DELTA.G of complexation with the second ion. Dry-operative electrodes using these ion-selective compositions as membranes are also disclosed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.