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Issue 38, 2019
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Structure and excitation-dependent emission of novel zinc complexes with pyridyltriazoles

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Abstract

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, 1H-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 π⋯π 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.

Graphical abstract: Structure and excitation-dependent emission of novel zinc complexes with pyridyltriazoles

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Publication details

The article was received on 02 Apr 2019, accepted on 06 Jul 2019 and first published on 16 Jul 2019


Article type: Paper
DOI: 10.1039/C9RA02491C
RSC Adv., 2019,9, 22143-22152
  • Open access: Creative Commons BY license
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    Structure and excitation-dependent emission of novel zinc complexes with pyridyltriazoles

    A. Gusev, E. Braga, E. Zamnius, M. Kiskin, M. Kryukova, A. Baryshnikova, B. Minaev, G. Baryshnikov, H. Ågren and W. Linert, RSC Adv., 2019, 9, 22143
    DOI: 10.1039/C9RA02491C

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