Rare-Earth Complexes of Ferrocene-Containing Ligands:  Visible-Light Excitable Luminescent Materials

Abstract The development of graphene oxide/rare earth complexes luminescent materials is limited due to the strong quenching ability of graphene oxide. However, the hybrid materials with pyromellitic acid (PMA) as ligand not only have better performance, but also have stronger luminescence intensity. Herein we tested the effect of the carboxylic acid structure of PMA on the luminescence intensity of graphene oxide/rare earth complexes hybrid materials. Phthalic acid (PA), Isophthalic acid (i-PA) and Terephthalic acid (p-PA) are selected as test ligand, representing the o-position, meta-position and para-position effects of PMA. By comparing the luminescence intensity, we found that o-position effect is helpful for the ligand to sensitize rare earth ions, and meta-position and para-position effects are helpful for the graphene oxide sheets (GOSs) to improve the luminescence intensity of hybrid materials and inhibit the quenching effect of the GOSs. Furthermore, we speculate on the relationship between the distance of π-π stacking of GOSs and rare earth complexes and luminescence intensity of hybrid materials. This work provides an important reference for the design of graphene oxide/rare-earth aromatic carboxylic acid hybrid luminescent materials.

Download Full-text

Research Progress on The Novel Rare Earth Luminescent Materials Based on Rare Earth Complexes and Ionic Liquids

Chinese Journal of Luminescence ◽

10.3788/fgxb20183904.0425 ◽

2018 ◽

Vol 39 (4) ◽

pp. 425-439

Author(s):

李焕荣 LI Huan-rong ◽

王天任 WANG Tian-ren

Keyword(s):

Ionic Liquids ◽

Rare Earth ◽

Rare Earth Complexes ◽

Research Progress ◽

Luminescent Materials ◽

The Novel

Download Full-text

(thf)2Ln(Ge9{Si(SiMe3)3}3)2 (Ln = Eu, Sm): the first coordination of metalloid germanium clusters to lanthanides

Chemical Communications ◽

10.1039/d1cc01151k ◽

2021 ◽

Author(s):

Andreas Schnepf ◽

Svetlana Klementyeva ◽

Claudio Schrenk ◽

Marat M Khusniyarov ◽

Minghui Zhang

Keyword(s):

Magnetic Properties ◽

Rare Earth ◽

Crystallographic Analysis ◽

Rare Earth Complexes ◽

Group 14 ◽

X Ray ◽

Germanium Clusters

We report the synthesis, structure and magnetic properties of the first rare earth complexes of metalloid group 14 clusters [(thf)2Ln(Ge9Hyp3)2] (Ln = Eu, Sm, Hyp = Si(SiMe3)3). X-ray crystallographic analysis...

Download Full-text

Rare earth complexes of chiral unsymmetrical hexaazamacrocycles

Polyhedron ◽

10.1016/j.poly.2021.115057 ◽

2021 ◽

Vol 198 ◽

pp. 115057

Author(s):

Katarzyna Wolska ◽

Jan Janczak ◽

Paula Gawryszewska ◽

Jerzy Lisowski

Keyword(s):

Rare Earth ◽

Rare Earth Complexes

Download Full-text

Magnetic Field-Assisted Photocatalytic Degradation of Organic Pollutants over Bi1−xRxFeO3 (R = Ce, Tb; x = 0.00, 0.05, 0.10 and 0.15) Nanostructures

Materials ◽

10.3390/ma14154079 ◽

2021 ◽

Vol 14 (15) ◽

pp. 4079

Author(s):

Radhalayam Dhanalakshmi ◽

Nambi Venkatesan Giridharan ◽

Juliano C. Denardin

Keyword(s):

Magnetic Field ◽

Rare Earth ◽

Visible Light ◽

Photocatalytic Degradation ◽

Organic Pollutants ◽

Visible Light Irradiation ◽

Organic Pollutant ◽

Hydrothermal Process ◽

Phenol Red ◽

Magnetic Features

Magnetic-field-accelerated photocatalytic degradation of the phenol red (PR) as a model organic pollutant was studied using rare-earth elements modified BiFeO3 (Bi1−xRxFeO3 (R = Ce, Tb; x = 0.0, 0.05, 0.10 and 0.15); BFO: RE) nanostructures. The nanostructures were prepared via the hydrothermal process and their morphological, structural, functional, optical and magnetic features were investigated in detail. The effect of magnetic fields (MFs) on photocatalysis were examined by applying the different MFs under visible light irradiation. The enhanced photodegradation efficiencies were achieved by increasing the MF up to 0.5T and reduced at 0.7T for the compositions x = 0.10 in both Ce and Tb substituted BFO. Further, mineralization efficiencies of PR, reproducibility of MF-assisted photocatalysis, stability and recyclability of BFO: RE nanostructures were also tested.

Download Full-text