Ayadi A.Branzea D.G.Allain M.Canevet D.Dinçalp H.El-Ghayoury A.2024-07-222024-07-22201702775387http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/15554A pyrene-based iminopyridine ligand L has been prepared and displays the absorption and emission properties expected for pyrene-based derivatives in solution. Ligand L, as well as two neutral and one monocationic coordination entities, respectively formulated as [ZnLCl2] 1, [ReLCl(CO)3] 3 and [CuL2](BF4) 2, have been crystallized and analyzed by single crystal X-ray diffraction analysis. The corresponding crystal structures indicate the formation of supramolecular architectures generated by offset π⋯π stacking between pyrene fragments and strong C–H⋯π interactions in coordination entity 1. For the cationic coordination entity 2, the crystal packing reveals the presence of C–H⋯F and C–H⋯π interactions and numerous C–H⋯π contacts interconnecting the molecules into a 3D network. As for coordination entity 3, hydrogen bonding and π⋯π stacking link the molecules in a three dimensional manner. Zinc(II) and copper(I) coordination entities have also been studied through isothermal titration calorimetry, which indicate a strong binding and a different stoichiometry for both coordination entities. Photophysical studies of the ligand and corresponding coordination entities show a monomer type pyrene emission and a higher fluorescence quantum yield for the zinc coordination entity 1 as compared with copper 2 and rhenium 3 coordination entities. © 2017 Elsevier LtdEnglishAll Open Access; Green Open AccessCalorimetersCalorimetryCopper compoundsHydrogen bondsIsothermsLigandsMoleculesPyreneTitrationX ray diffraction analysisZinc compoundsAbsorption and emissionsAbsorption propertyCoordination entityEmission propertiesIsothermal titration calorimetryPhotophysical propertiesSingle crystal X-ray diffraction analysisStability constantsX-ray structureπ-π- stackingSingle crystalsArticle10.1016/j.poly.2017.07.001