Krause, C. and Werner, Tobias and Huber, C. and Wolfbeis, Otto S. (2000) Hydrophilic sensor membrane based on cation-selective protic chromoionophore. FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 367 (5). pp. 426-428. ISSN 0937-0633
Full text not available from this repository. (Request a copy)Abstract
The first potassium optode based on a protic chromoionophore immobilized in a hydrogel matrix is presented. The highly selective protic chromoionophore consists of a cryptohemispherand moiety and a trinitroanilino chromophore part. The acidifying power of potassium ions over sodium ions is 0.6 pH units. This correlates with the findings in solution. In contrast to several crown and ate-crown based chromophores the highly preorganized moiety allows ion detection even in aqueous environment. The detection limit for potassium ions at pH 7.7 is 5 mu M.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HOST GUEST COMPLEXATION; COLORIMETRIC DETERMINATION; POTASSIUM; REAGENTS; ALKALI; SODIUM; PLASMA; SERUM; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Chemo- und Biosensorik (Prof. Antje J. Bäumner, formerly Prof. Wolfbeis) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 Apr 2022 06:43 |
| Last Modified: | 05 Apr 2022 06:43 |
| URI: | https://pred.uni-regensburg.de/id/eprint/42345 |
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