Repozytorium
Wyszukaj
Kolekcje
Inne
Spectroscopy and structure of [LnL3bipy] and [LnL3phen] complexes with CAPh type ligand dimethylbenzoylamidophosphate.
Autorzy
Rok wydania
2016
Czasopismo
Numer woluminu
178
Strony
392-399
DOI
10.1016/j.jlumin.2016.06.018
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Coordination compounds with general formulas [LnL(3)bipy] (Ln1) and [LnL(3)phen] (Ln2), where Ln=La-Nd, Sm-Yb, L- -phosphoro-azo beta-diketone analog anion: [C6H5CONPO(OCH3)(2)](-) phen=1,10-phenan-throline, bipy=2,2'-bipyridine, were synthesized and characterized by means of IR, H-1 NMR and high resolution UV-vis absorption and luminescence spectroscopy (emission, excitation spectra and emission decay times) at 300, 77 and 4.2 K. The thermal behavior and stability of Eu-III and Tb-III complexes were studied by thermogravimetric and differential thermal analyses. Single-crystal X-ray diffraction data showed that Pr1, Yb1 and La2, Eu2, Gd2, Yb2 crystalize in the monoclinic and triclinic systems, respectively with eight-coordinated lanthanide ions. The relation between the crystal structure and spectroscopic properties of the complexes are discussed. The Eu-III and Tb-III complexes exhibited a strong metal-centered emission with decay time 1.5-1.8 ms. Intrinsic quantum yields (Q(Ln)(Ln)) equal 57 (Eu1) and 55% (Eu2). The Tb-III complexes revealed a very efficient ligand-to-metal energy transfer at room and low temperatures.
Słowa kluczowe
lanthanides, carbacylamidophosphates, coordination compounds, luminescence, absorption spectroscopy
Adres publiczny
http://dx.doi.org/10.1016/j.jlumin.2016.06.018
Strona internetowa wydawcy
Podobne publikacje
Luminescent properties and structure of new CAPh-based lanthanide complexes [LnL3Q], containing additional bis-heterocyclic aromatic ligand-antenna 2-(1,3,4-oxadiazole-2-yl) pyridine.
Yakovlev Oleksii O., Kariaka Nataliia S., Trush Victor A., Smola Sergii S., Siczek Miłosz, Amirkhanov Vladimir M.
First examples of carbacylamidophosphate pentanuclear hydroxo-complexes : synthesis, structure, luminescence and magnetic properties.
Kariaka Nataliia S., Rusanova Julia A., Smola Sergii S., Kolotilov Sergey V., Znovjyak Katerina O., Weselski Marek, Sliva Tatiana Yu., Amirkhanov Vladimir M.