Abstract
Abstract Self-assembly of N6-donor bis(terpyridine) ligand L with transition metal ions: Co(II), Mn(II) and Cd(II) leads to a formation of three kinds of supramolecular complexes. In the electronic absorption and emission spectra of supramolecular complexes additional bands were observed what was ascribed to the coordination of ligand molecules to metal ions. Luminescence properties of these complexes strongly depend on the kind of metal ions and counter ions. The effective blue luminescence was observed in the case of Mn(II) and Cd(II) complexes in which all N-donor atoms of ligand molecules coordinate with the metal center
Highlights
In recent years, the study of photoluminescent supramolecular complexes has been attractive mainly due to their many potential applications
The ligand-based luminescence intensity of compounds as well as the shape of spectra depends on the complexing agent – both the type of metal ions and the kind of anions
In the presence of halide ions in the structure of the metal complexes, the Previously we reported that luminescence properties of Mn(II) and Zn(II) complexes with terpyridine ligand strongly depend on the kind of anions present in complex[6]
Summary
The study of photoluminescent supramolecular complexes has been attractive mainly due to their many potential applications. Transition metal complexes which exhibit emission of light are attractive materials for the construction of organic light-emitting diodes[2,3,4,5,6]. D10 metal ions, such as Zn(II) and Cd(II), are suitable for the construction of luminescent coordination complexes[7,8,9]. Such compounds often have selective properties and can be used as sensors for the detection of different anions or molecules[10, 11]. Bis(terpyridine) ligand L, obtained via Stille-type coupling reaction, in reactions with transition metal ions forms four types of supramolecular complexes (Scheme 1). We describe luminescence properties of mono-, di- and trinuclear complexes of Mn(II) (1–4), Co(II) (5–7) and Cd(II) (8, 9) complexes and the influence of different guests on their emission behaviour
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