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Structure and excitation-dependent emission of novel zinc complexes with pyridyltriazoles
Russian Acad Sci, NS Kurnakov Inst Gen & Inorgan Chem, Moscow 119991, Russia. ryukova, Mariya.
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2019 (English)In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, Vol. 9, no 38, p. 22143-22152Article in journal (Refereed) Published
Abstract [en]

A series of Zn(ii) complexes with 5-(4-R-phenyl)-3-(pyridin-2-yl)-1,2,4-triazoles have been synthesized and subsequently characterized by single crystal X-ray diffraction, H-1-NMR, FT-IR spectroscopy, elemental analyses, ESI-MS, and PXRD. The X-ray diffraction analyses revealed that the complexes have a similar molecular structure and their supramolecular frameworks are constructed by hydrogen bonds and pi center dot center dot center dot pi interaction scaffolds. Upon irradiation with UV light, the studied complexes display deep blue emission at 396-436 nm in the solid state. The compounds show an unexpected excitation-dependent emission phenomenon which is detected by a change in the emission color (from blue to yellow) upon increase of the excitation wavelength. The conducted quantum-chemical calculations indicate that supramolecular differences in the single-crystal architecture of the synthesized complexes play a crucial role for this photophysical behaviour.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2019. Vol. 9, no 38, p. 22143-22152
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Chemical Sciences
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URN: urn:nbn:se:kth:diva-255755DOI: 10.1039/c9ra02491cISI: 000476751400064Scopus ID: 2-s2.0-85069447581OAI: oai:DiVA.org:kth-255755DiVA, id: diva2:1341645
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QC 20190809

Available from: 2019-08-09 Created: 2019-08-09 Last updated: 2019-10-04Bibliographically approved

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Minaev, Boris F.Baryshnikov, Gleb V.Ågren, Hans
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