Maisuls, Ivan; Wang, Cui; Gutierrez Suburu, Matias E.; Wilde, Sebastian; Daniliuc, Constantin-Gabriel; Bruenink, Dana; Doltsinis, Nikos L.; Ostendorp, Stefan; Wilde, Gerhard; Koesters, Jutta; Resch-Genger, Ute; Strassert, Cristian A. published an article in 2021. The article was titled ãLigand-controlled and nanoconfinement-boosted luminescence employing Pt(II) and Pd(II) complexes: from color-tunable aggregation-enhanced dual emitters towards self-referenced oxygen reportersã? and you may find the article in Chemical Science.SDS of cas: 626-05-1 The information in the text is summarized as follows:
In this work, we describe the synthesis, structural and photophys. characterization of four novel Pd(II) and Pt(II) complexes bearing tetradentate luminophoric ligands with high photoluminescence quantum yields (ΦL) and long excited state lifetimes (τ) at room temperature, where the results were interpreted by means of DFT calculations Incorporation of fluorine atoms into the tetradentate ligand favors aggregation and thereby, a shortened average distance between the metal centers, which provides accessibility to metal-metal-to-ligand charge-transfer (3MMLCT) excimers acting as red-shifted energy traps if compared with the monomeric entities. This supramol. approach provides an elegant way to enable room-temperature phosphorescence from Pd(II) complexes, which are otherwise quenched by a thermal population of dissociative states due to a lower ligand field splitting. Encapsulation of these complexes in 100 nm-sized aminated polystyrene nanoparticles enables concentration-controlled aggregation-enhanced dual emission. This phenomenon facilitates the tunability of the absorption and emission colors while providing a rigidified environment supporting an enhanced ΦL up to about 80% and extended τ exceeding 100 μs. Addnl., these nanoarrays constitute rare examples for self-referenced oxygen reporters, since the phosphorescence of the aggregates is insensitive to external influences, whereas the monomeric species drop in luminescence lifetime and intensity with increasing triplet mol. dioxygen concentrations (diffusion-controlled quenching). In the experimental materials used by the author, we found 2,6-Dibromopyridine(cas: 626-05-1SDS of cas: 626-05-1)
2,6-Dibromopyridine(cas: 626-05-1) belongs to pyridine. Pyridine derivatives lend themselves to many roles in the spirited field of supramolecular chemistry â?whether as the ligand backbone of metal-organic polymers or presiding over the key electronic stations of nanodevices. In biochemistry, pyridine-containing cofactors are necessary nutrients on which our lives depend. SDS of cas: 626-05-1