Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/10087
Title: | Synthesis of new photosensitive H2BBQ2+[ZnCl4]2−/[(ZnCl)2(μ-BBH)] complexes, through selective oxidation of H2O to H2O2 |
Authors: | Stylianou, Marios Hadjiadamou, Ioanna Drouza, Chryssoula Hayes, Sophia C. Lariou, Ε. Tantis, Iosif Lianos, Panagiotis Tsipis, Athanassios C. Keramidas, Anastasios D. |
Major Field of Science: | Agricultural Sciences |
Field Category: | Agricultural Biotechnology |
Keywords: | Monopropellant;Liquid Rocket Propellant;Specific Impulse |
Issue Date: | 2017 |
Source: | Dalton Transactions, 2017, vol. 46, no. 11, pp. 3688-3699 |
Volume: | 46 |
Issue: | 11 |
Start page: | 3688 |
End page: | 3699 |
DOI: | 10.1039/c6dt04643f |
Journal: | Dalton Transactions |
Abstract: | A new two-electron photosensitizer, H2BBQ2+[ZnCl4]2−/[(ZnCl)2(μ-BBH)] (BBQ stands for 2,5-bis[bis(pyridin-2-ylmethyl)amino]-1,4-quinone and BBH stands for 2,5-bis[bis(pyridin-2-ylmethyl)amino]-1,4-hydroquinone), has been synthesized and the oxidation state of the ligand was determined by X-ray crystallography and NMR spectroscopy. Under light illumination the H2BBQ2+[ZnCl4]2− + ZnCl2 is reduced quantitatively to [(ZnCl)2(μ-BBH)] (pH ∼ 5) oxidizing H2O to H2O2 as is evident by trap experiments. Electrochemistry gave a reversible two-electron ligand-centered redox wave for [(ZnCl)2(μ-BBH)]. UV-Vis, luminescence and EPR spectroscopies reveal the slow formation of a stable quinone diradical, intermediate of the reaction. DFT calculations are in agreement with the proposed mechanism. Based on this property an aqueous {[(ZnCl)2(μ-BBH)]||H2O2} solar rechargeable galvanic cell has been constructed. |
URI: | https://hdl.handle.net/20.500.14279/10087 |
ISSN: | 14779234 |
DOI: | 10.1039/c6dt04643f |
Rights: | © The Royal Society of Chemistry |
Type: | Article |
Affiliation : | University of Cyprus Cyprus University of Technology University of Patras University of Ioannina |
Publication Type: | Peer Reviewed |
Appears in Collections: | Άρθρα/Articles |
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