The recently synthesized series of PtII complexes containing cyclometallating (phenylpyridine or benzoquinoline) and N-heterocyclic carbene ligands possess intriguing structures, topologies, and light emitting properties. Here, we report curious physicochemical interactions between in situ PVD-grown films of a typical representative of the aforementioned PtII complex compounds and Li, Na, K and Cs atoms. Based on a combination of detailed core-level photoelectron spectroscopy and quantum-chemical calculations at the density functional theory level, we found that the deposition of alkali atoms onto the molecular film leads to unusual redistribution of electron density: essential modification of nitrogen sites, reduction of the coordination PtII centre to Pt0 and decrease of electron density on the bromine atoms. A possible explanation for this is formation of a supramolecular system 'Pt complex-alkali metal ion'; the latter is supported by restoration of the system to the initial state upon subsequent oxygen treatment. The discovered properties highlight a considerable potential of the PtII complexes for a variety of biomedical, sensing, chemical, and electronic applications.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:30061 |
| Date | 12 December 2016 |
| Creators | Makarova, Anna A., Grachova, Elena V., Niedzialek, Dorota, Solomatina, Anastasia I., Sonntag, Simon, Fedorov, Alexander V., Vilkov, Oleg Yu., Neudachina, Vera S., Laubschat, Clemens, Tunik, Sergey P., Vyalikh, Denis V. |
| Publisher | Nature Publishing Group |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 10.1038/srep25548 |
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