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Oxygen sensing by fluorescence quenching of [Cu(btmgp)I] |
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| Authors: | Sonja Herres-Pawlis Gerhard Berth Ludger Schmidt Hans-Joachim Warnecke |
| Affiliation: | a Anorganische Chemie II, Fakultät Chemie, Technische Universität Dortmund, 44221 Dortmund, Germany b Center for Optoelectronics and Photonics Paderborn (CeOPP) and Department Physik, Universität Paderborn, Warburger Straße 100, 33098 Paderborn, Germany c Technische Chemie, Department Chemie, Universität Paderborn, Warburger Straße 100, 33098 Paderborn, Germany |
| Abstract: | A fluorescence study of acetonitrile solutions of bis(tetramethylguanidine)propane, copper(I)-iodide and [Cu(btmgp)I] was performed and the chemical reaction of the latter species with O2 was investigated at room temperature. The actual quenching process via O2 gassing was studied and an exponential dependence of the fluorescence intensity with respect to the complex concentration was observed.Furthermore the survey was deepened on time resolved fluorescence properties of solved [Cu(btmgp)I] in a wider concentration range. The applicability of this complex for O2 sensing inside a microreactor system was proven by confocal fluorescence measurements. It was shown that the investigated system can be used for oxygen sensing in the copper concentration range from 10−2 to 10−9 mol/l. |
| Keywords: | Copper Oxygen Fluorescence quenching N donor ligands |
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