Jump to main content
Jump to site search

Issue 23, 2019
Previous Article Next Article

Holmium, thulium and lutetium-octamolybdate [Mo8O28]8− 1D chains: luminescence investigation of europium doped lutetium-octamolybdate

Author affiliations

Abstract

In this work we report a novel lanthanide octamolybdate 1D chain type of structure formed with holmium, thulium and lutetium. This is a rare case of compounds built out of [Mo8O28]8− units. These compounds were prepared in a mild reaction synthesis starting from the commonly used heptamolybdate polyoxometalate (POM) [(NH4)6[Mo7O24]. Interestingly, in our previous study we have employed a very similar synthesis route for lanthanides with a larger ionic radius and obtained heptamolybdate clusters. For the lanthanides with a smaller ionic radius (Ho3+, Tm3+ and Lu3+) no crystals could be obtained under those conditions. Only when doubling the amount of the lanthanide salt, single crystals suitable for measurements were obtained. These crystals revealed yet a very different structure from those previously observed. Lanthanide octamolybdate 1D chains were formed. Doubling the amount of the salt for other lanthanide ions still yielded heptamolybdate compounds previously reported by us. The lutetium octamolybdate compound was doped with 1–7.5% of Eu3+ ions yielding emission colors ranging from blue to strong red. Additionally in these materials the excitation wavelength was varied, and it was observed that the materials emission color was excitation-wavelength dependent.

Graphical abstract: Holmium, thulium and lutetium-octamolybdate [Mo8O28]8− 1D chains: luminescence investigation of europium doped lutetium-octamolybdate

Back to tab navigation

Supplementary files

Article information


Submitted
15 Feb 2019
Accepted
03 May 2019
First published
03 May 2019

Dalton Trans., 2019,48, 8186-8192
Article type
Paper

Holmium, thulium and lutetium-octamolybdate [Mo8O28]8− 1D chains: luminescence investigation of europium doped lutetium-octamolybdate

A. M. Kaczmarek, R. Van Deun and K. Van Hecke, Dalton Trans., 2019, 48, 8186
DOI: 10.1039/C9DT00695H

Social activity

Search articles by author

Spotlight

Advertisements