Relations between Structural and Luminescence Properties of Novel Lanthanide Nitrate Complexes with Bis-phosphoramidate Ligands

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10405392" target="_blank" >RIV/00216208:11320/19:10405392 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=3Otcv5uiI2" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=3Otcv5uiI2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.inorgchem.8b03611" target="_blank" >10.1021/acs.inorgchem.8b03611</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Relations between Structural and Luminescence Properties of Novel Lanthanide Nitrate Complexes with Bis-phosphoramidate Ligands

Popis výsledku v původním jazyce

Five new bisphosphoramide-based Ln(III) nitrate complexes [La-2(NO3)(6)L-3(I)](n) (1), [Ce-2(NO3)(6)L-3(I)](n) (2), [Sm-2(NO3)(6)L-3(II)](n), (3), Sm-2(NO3)(6)L-3(III) (4), and Er(NO3)(3)L-2(III) (5) [L-I = piperazine-1,4-diylbis(diphenyl phosphine oxide), L-II = N,N&apos;-(ethane-1,2-diyl)bis(N-methyl-P,P-diphenylphosphinic amide, and L-II = N,N&apos;-(ethane-1,2-diyl)bis(P,P-diphenylphosphinic amide)] have been synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis (TGA), and single crystal X-ray and powder diffractions. The results of the X-ray diffraction analysis revealed the new polymorph of L-III, and the structural diversity of the synthesized complexes in the solid state. Complexes 1-3 display two-dimensional coordination polymers (2D-CP), containing layers with honeycomb (6, 3) topology. In these 2D-CPs, each Ln center (La, Ce, and Sm in 1, 2, and 3, respectively) could be considered as a triconnected node, linked by three bridging bisphosphoramide ligands as two-connecting linkers. In contrast, 4 is a discrete binuclear complex, in which bidentate L ill ligand has two entirely different conformations: the syn-chelating and the anti bridging. Cationic complex 5 shows the monomeric structure, where bidentate L-III adopts the syn-chelating conformation. A comprehensive luminescence investigation has been performed on free ligands and their corresponding complexes as well. The synthesized compounds display a variety of luminescence behavior, including the ligand-centered fluorescence in 1, 2, and 5, two distinct emission peaks in 1 and 2, characteristic Sm-centered f-f emission in 3 and 4, and excitation-dependent emission in L-III, 1, and 2. Furthermore, the time dependent density functional theory (TD-DFT) study was carried out on the reported compounds to understand the nature of the emission peaks and the observed luminescence properties. The solid-state emission quantum yields of lanthanide complexes were also determined at different excitation wavelengths.

Název v anglickém jazyce

Relations between Structural and Luminescence Properties of Novel Lanthanide Nitrate Complexes with Bis-phosphoramidate Ligands

Popis výsledku anglicky

Five new bisphosphoramide-based Ln(III) nitrate complexes [La-2(NO3)(6)L-3(I)](n) (1), [Ce-2(NO3)(6)L-3(I)](n) (2), [Sm-2(NO3)(6)L-3(II)](n), (3), Sm-2(NO3)(6)L-3(III) (4), and Er(NO3)(3)L-2(III) (5) [L-I = piperazine-1,4-diylbis(diphenyl phosphine oxide), L-II = N,N&apos;-(ethane-1,2-diyl)bis(N-methyl-P,P-diphenylphosphinic amide, and L-II = N,N&apos;-(ethane-1,2-diyl)bis(P,P-diphenylphosphinic amide)] have been synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis (TGA), and single crystal X-ray and powder diffractions. The results of the X-ray diffraction analysis revealed the new polymorph of L-III, and the structural diversity of the synthesized complexes in the solid state. Complexes 1-3 display two-dimensional coordination polymers (2D-CP), containing layers with honeycomb (6, 3) topology. In these 2D-CPs, each Ln center (La, Ce, and Sm in 1, 2, and 3, respectively) could be considered as a triconnected node, linked by three bridging bisphosphoramide ligands as two-connecting linkers. In contrast, 4 is a discrete binuclear complex, in which bidentate L ill ligand has two entirely different conformations: the syn-chelating and the anti bridging. Cationic complex 5 shows the monomeric structure, where bidentate L-III adopts the syn-chelating conformation. A comprehensive luminescence investigation has been performed on free ligands and their corresponding complexes as well. The synthesized compounds display a variety of luminescence behavior, including the ligand-centered fluorescence in 1, 2, and 5, two distinct emission peaks in 1 and 2, characteristic Sm-centered f-f emission in 3 and 4, and excitation-dependent emission in L-III, 1, and 2. Furthermore, the time dependent density functional theory (TD-DFT) study was carried out on the reported compounds to understand the nature of the emission peaks and the observed luminescence properties. The solid-state emission quantum yields of lanthanide complexes were also determined at different excitation wavelengths.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Inorganic Chemistry

ISSN

0020-1669

e-ISSN

—

Svazek periodika

58

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

5630-5645

Kód UT WoS článku

000467351100035

EID výsledku v databázi Scopus

2-s2.0-85064344018