Synthesis and characterization of luminescent zinc(II) complexes with a N,N-bidentate 1-pyridylimidazo[1,5-a]pyridine ligand
| Autor: | G. Attilio Ardizzoia, Stefano Brenna, Sara Durini, Bruno Therrien |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Zinc(II) Crystal structure N ligands Pyridylimidazo[1
5-a]pyridine Photoluminescence Denticity Ligand Polyatomic ion Inorganic chemistry chemistry.chemical_element Zinc(II) Crystal structure N ligands Pyridylimidazo[1 Zinc Crystal structure 5-a]pyridine Photoluminescence Inorganic Chemistry Crystallography chemistry.chemical_compound chemistry Excited state Pyridine Materials Chemistry Physical and Theoretical Chemistry Luminescence |
| Zdroj: | Polyhedron. 90:214-220 |
| ISSN: | 0277-5387 |
| DOI: | 10.1016/j.poly.2015.02.005 |
| Popis: | Ligand 2-(1-(pyridin-2-yl)imidazo[1,5-a]pyridin-3-yl)phenol (L) has been reacted in a 2:1 molar ratio with different Zn(Y)2nH2O salts, where Y represents a polyatomic anion (Y = ClO4−, NO3−, BF4−, PF6−). The X-ray structural analysis performed on two of the derivatives obtained, namely [Zn(L)2(ClO4)](ClO4)·H2O (1) and [Zn(L)2(CH3CN)2](BF4)2 (6), proves that as expected ligand L binds in a N,N-bidentate mode via the pyridine ring (Npy) and the pyridine-like nitrogen of the imidazo[1,5-a]pyridine skeleton (Nim). A spectroscopic investigation (including infrared, elemental analysis, 1H and 31P NMR, thermogravimetric analysis) has been performed on these species, allowing complete characterizations. A preliminary survey on their photophysical properties in the solid state was carried out: the complexes showing intense luminescence when excited with UV light (λexc = 421–469 nm) with λmax of emission in the blue-green range (468–500 nm) and moderate absolute photoluminescence quantum yields (PLQYs). |
| Databáze: | OpenAIRE |
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