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Shritz, Rozalia ; Shapira, Reut ; Borzin, Elena ; Tumanskii, Boris ; Reichstein, Werner ; Meichner, Christoph ; Schwaiger, Florian ; Reichstein, Paul M. ; Kreyenschmidt, Judith ; Haarer, Dietrich ; Kador, Lothar ; Eichen, Yoav:
Measuring Cumulative Exposure to Oxygen with a Diphenylphosphine–Alkyl Naphthaleneimide Luminescence Turn-On Dyad.
In: Chemistry : a European Journal.
Bd. 21
(2015)
Heft 32
.
- S. 11531-11537.
ISSN 1521-3765
DOI: https://doi.org/10.1002/chem.201500479
Abstract
2-(2-Diphenylphosphanylethyl)benzo[de]isoquinoline-1,3-dione is a poorly luminescent, photoinduced-electron-transfer (PET) dyad, NI-(Ph)2P:, in which the luminescence of its naphthaleneimide (NI) part is quenched by the lone-pair electrons of the phosphorus atom of the (Ph)2P: group. Photoinduced oxidation of (Ph)2P: to (Ph)2PO by molecular oxygen regenerates the luminescence of the NI group, because the oxidized form (Ph)2PO does not serve as a quencher to the NI system. The oxidation of (Ph)2P: is thermally inaccessible. The NI-(Ph)2P: system was applied to monitoring the cumulative exposure of oxidation-sensitive goods to molecular oxygen. The major advantage of this new PET system is that it reacts with oxygen only via the photoinduced channel, which offers the flexibility of monitoring the cumulative exposure to oxygen in different time periods, simply by varying the sampling frequency. Electronic-energy calculations and optical spectroscopic data revealed that the luminescence turn-on upon reaction with molecular oxygen relies on a PET mechanism.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | Analytical methods; electron transfer; luminescence; oxygen; photochemistry |
| Institutionen der Universität: | Fakultäten Fakultäten > Fakultät für Mathematik, Physik und Informatik Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut Forschungseinrichtungen Forschungseinrichtungen > Forschungszentren Forschungseinrichtungen > Forschungszentren > Bayreuther Institut für Makromolekülforschung - BIMF |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Eingestellt am: | 12 Feb 2016 10:53 |
| Letzte Änderung: | 14 Mai 2020 08:27 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/27847 |