Visible and NIR emitting Yb(iii) and Er(iii) complexes sensitized by β-diketonates and phenanthroline derivatives

被引：15

作者：

Brito-Santos, Gabriela ^{[1
]}

Gil-Hernandez, Beatriz ^{[1
,2
]}

Martin, Inocencio R. ^{[2
,3
]}

Guerrero-Lemus, Ricardo ^{[2
,3
]}

Sanchiz, Joaquin ^{[1
,2
]}

机构：

[1] Univ La Laguna, Fac Ciencias, Dept Quim, Tenerife 38206, Spain

[2] Univ La Laguna, Inst Univ Mat & Nanotecnol, Tenerife 38206, Spain

[3] Univ La Laguna, Fac Ciencias, Dept Fis, Tenerife 38206, Spain

来源：

RSC ADVANCES | 2020年 / 10卷 / 46期

关键词：

NEAR-INFRARED LUMINESCENCE; ERBIUM(III) COMPLEXES; HIGHLY LUMINESCENT; LANTHANIDE; EU(BPHEN)(TTA)(3); AMPLIFIERS; LIGAND;

D O I：

10.1039/d0ra05539e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Five new complexes namely, [Er(bta)(3)(me-phen)] (1), [Yb(bta)(3)(me-phen)] (2), [Gd(bta)3(me-phen)] (3), [Yb(bta)(3)(pyz-phen)] (4), and [Er(tta)(3)(pyz-phen)] (5) have been prepared with the fluorinated beta-diketone ligands Hbta and Htta (Hbta = benzoyltrifluoroacetone and Htta = 2-thenoyltrifluoroacetone) combined with the azacyclo phenanthroline-derivatives, 5-methyl-1,10-phenanthroline (me-phen) and pyrazino[2,3-f][1,10]phenanthroline (pyz-phen). The crystal structures of2,4and5have been solved by single-crystal X-ray diffraction. PXRD patterns show that1-3are isostructural. All the compounds exhibit a molecular structure with the metal atom in an eight-coordination geometry. The photophysical processes involved in the photoluminescence of the complexes are investigated; as a result, the radiative lifetimes (tau(Ln)), the 4f-4f emission quantum efficiencies (phi(Ln)) and the energy-levels diagram are calculated.

引用

页码：27815 / 27823

页数：9

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