Luminescent properties of zinc complexes of 4-formylpyrazolone based azomethine ligands: Excitation-dependent emission in solution

Synthesis, Photoluminescence and Electrical Study of Pyrazolone-Based Azomethine Ligand Zn(II) Complexes

“…Particularly, the highest quantum yields was found for of 4 while lowest—for 7. It is well known that zinc cations in complexes play a key role in increasing the fluorescent emission due to enhancement in the rigidity of the ligand and reduces the loss of energy by thermal vibrational decay, contributing to an increase in the lifetime of the excited state and efficiency of luminescence [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ]. To support this, the luminescence decay curves for both ligands and their corresponding complexes were recorded at room temperature in the solid state.…”

“…Among the promising optical materials, zinc complexes have been especially important because of the simplicity in their synthesis procedures, wide range of emission maximum position and low cost of zinc in comparison with platinum metals and f-elements. Extensive research work in recent decades has led to the preparation of a number of new zinc complexes containing organic ligands [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ], which have been used as emitters and electron transporters in OLED research. The molecular design and synthesis of new organic ligands are among the main approaches for the construction of zinc complexes with controllable luminescent properties.…”

“…The molecular design and synthesis of new organic ligands are among the main approaches for the construction of zinc complexes with controllable luminescent properties. Among the large number of zinc complexes azomethine ligands proved to be excellent candidates for the development of new luminescent material due to the ease of introduction and targeted variation of type and position of substituents [ 16 , 17 , 18 , 19 , 20 , 21 ].…”

Structural Characterization of a New Collagen Biomimetic Octapeptide with Nanoscale Self‐Assembly Potential: Experimental and Theoretical Approaches

“…Therefore, an indirect correlation between fluorescence and the peptide association in solution could be established. [44] An earlier hypothesis suggests that the intrinsic fluorescence observed at higher emission wavelengths could also be attributed to hydrogen bond arrays, noticed for protein crystals or aggregates. [45] When peptides are more clustered, a higher fluorescence intensity was noticed.…”

Mathematical Model of Coextrusion Molding of Polymer-concrete Building Structures

“…A modern specialist, working a machinery complex which performs the coextrusion processing of polymer and concrete mixes, has to master the methodology and algorithms of doing these optimization tasks of choosing the optimum process condition. This becomes especially topical while operating expensive programmatically controlled plant [4][5], but setting the optimum process condition is implemented on the basis of knowing the physics process of coextrusion of polymers and concrete mixes, task mathematical modelling, application of computational algorithms search for the solution.…”