Werner, Tobias and Fahnrich, Karsten and Huber, Christian and Wolfbeis, Otto S. (1999) Anion-induced fluorescence quenching of a new zwitterionic biacridine derivative. PHOTOCHEMISTRY AND PHOTOBIOLOGY, 70 (4). pp. 585-589. ISSN 0031-8655,
Full text not available from this repository. (Request a copy)Abstract
The effect of halides and different buffer anions on the quenching of the fluorescence of the new probe 10,10'-bis(3-sulfopropyl)-9,9'-biacridine (SPBA) has been studied using fluorescence and decay time measurements. The linearity of the Stern-Volmer plot indicates that fluorescence quenching by halides can be described reasonably well by a single-exponential decay with a K of 4.06 x 10(6) M-1 s(-1) for chloride, 7.83 x 106 M-1 s(-1) for bromide and 1.12 x 10(7) M-1 s(-1) for iodide, We have found that SPBA is collisionally quenched also by the buffers 3-(N-morpholino)propanesulfonic acid (MOPS) and N-2-hydroxy-ethylpiperazine-N'-ethansulfonic acid (HEPES). The bimolecular rate constants are 1.67 x 106 M-1 s(-1) for HEPES and 1.44 x 10(6) M-1 s(-1) for MOPS.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CHLORIDE; MEMBRANE; INDICATORS; PROBE; SENSOR; |
| 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: | 20 Dec 2022 16:09 |
| Last Modified: | 20 Dec 2022 16:09 |
| URI: | https://pred.uni-regensburg.de/id/eprint/48975 |
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