Synthesis and Characterization of Lanthanide Complexes

A special issue of Crystals (ISSN 2073-4352).

Deadline for manuscript submissions: closed (31 October 2019)

Special Issue Editor


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Guest Editor
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
Interests: lanthanide organometallics, main group chemistry, clusters, unusual chemical bonds

Special Issue Information

Dear Colleagues,

Lanthanides represent a very intriguing family of multi-talented elements that are deeply involved into different scopes of human activity. The sequential filling of the f orbitals in the Ce–Lu row provides the elements with unique electronic, photophysical, and magnetic properties. These properties have been recognized as appealing for a wide range of applications based on different types of energy conversion. Nowadays, we are living in a world of lanthanides, which are spread all around us—computers, cell phones, televisions, lasers, light-emitting diodes, banknote dyes, and so on. The wide distribution of the lanthanide-based materials reflects the outstanding achievements of the solid state chemistry of lanthanides. In spite of the fact that the chemistry of the molecular complexes of lanthanides is a vigorously developing area, to date, it still drops far behind the coordination chemistry of d-metals. The large coordination numbers of the lanthanide ions, high oxophilicity, highly ionic bonds between metal and the ligand donor atoms, and therefore high lability of the coordination sphere make the lanthanide complexes really complicated objects with respect to guided synthesis. The characterization of the lanthanide complexes is also a big problem, caused by their paramagnetism and prevalent air sensitivity. In this context, all works focused on the synthesis of the new lanthanide complexes, the reliable determination of their geometrical and electronic structures, and the composition–structure–property relations are desired.

The main aim of this Special Issue is to collect contributions about the development of new approaches and methods of synthesis of the lanthanide complexes, the study of their crystal and molecular structure, the experimental and theoretical study of their electronic structure, and the versatile investigation of the properties related to the structures. This Special Issue should present to the readers the state-of-the-art as well as the new achievements and directions of studies in the field of the coordination chemistry of lanthanides.

Prof. Dr. Sergey N. Konchenko
Guest Editor

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Keywords

  • lanthanide complexes
  • lanthanide organometallics
  • heterometallic complexes
  • metal–organic frameworks
  • synthesis
  • crystal structure
  • spectroscopy
  • electronic structure

Published Papers (1 paper)

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Research

14 pages, 3145 KiB  
Article
High Efficient YVPO4 Luminescent Materials Activated by Europium
by Tamara Minakova, Sergey Mjakin, Vadim Bakhmetyev, Maxim Sychov, Ilya Zyatikov, Irina Ekimova, Vladimir Kozik, Yu-Wen Chen and Irina Kurzina
Crystals 2019, 9(12), 658; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst9120658 - 09 Dec 2019
Cited by 7 | Viewed by 2888
Abstract
YPO4:Eu, YVO4:Eu, and YVPO4:Eu based phosphors with various Eu(III) activator contents and phosphate-vanadate ratios were synthesized by the self-propagating high-temperature synthesis method. The samples were characterized by scanning electron microscopy, nitrogen sorption, acid-base indicators and photoluminescence. The [...] Read more.
YPO4:Eu, YVO4:Eu, and YVPO4:Eu based phosphors with various Eu(III) activator contents and phosphate-vanadate ratios were synthesized by the self-propagating high-temperature synthesis method. The samples were characterized by scanning electron microscopy, nitrogen sorption, acid-base indicators and photoluminescence. The particle surface features with a finely dispersed structure comprising all the involved elements. The pore structure and the specific surface areas of the samples were different depending on the compositions of the samples. The most finely dispersed sample was YVO4:Eu samples. The specific surface areas of the YPO4:Eu samples were 10 to 15 times greater than those of vanadate samples. The phosphors samples had a slightly basic (YVO4:Eu, YVPO4:Eu) or slightly acidic (YPO4:Eu) properties of the surface with different contents of Lewis and Brönsted sites. The differences in the compositions and acid-base state resulted in the difference in the intensity and brightness of the photoluminescence (PL) of the samples. The yttrium-phosphate-vanadate phosphors of the mixed YVxP1−xO4-Eu had higher brightness and PL intensity than those samples with similar phosphate as well as vanadate phosphors. Full article
(This article belongs to the Special Issue Synthesis and Characterization of Lanthanide Complexes)
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