Open AccessEvaluation of the morphology and chelating agent excess in the design of luminescent metalorganic framework of europium thenoyltrifluoroacetone
Author(s) -
Dulce-Yolotzin Medina-Velazquez,
Edith OsoriodelaRosa,
Víctor Calderón,
A. García Murillo,
Felipe-de-Jesús Carrillo Romo,
Maria del Rosario Ruiz Guerrero
Publication year - 2022
Publication title -
advances in mechanical engineering/advances in mechanical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.318
H-Index - 40
eISSN - 1687-8140
pISSN - 1687-8132
DOI - 10.1177/16878132221095503
Subject(s) - europium , thenoyltrifluoroacetone , fourier transform infrared spectroscopy , monoclinic crystal system , luminescence , materials science , photoluminescence , scanning electron microscope , morphology (biology) , chelation , spectroscopy , analytical chemistry (journal) , nanotechnology , chemical engineering , chemistry , crystallography , crystal structure , organic chemistry , composite material , metallurgy , physics , optoelectronics , quantum mechanics , biology , engineering , extraction (chemistry) , genetics , solvent extraction
Metal-organic frameworks (MOFs) have been synthesized using several elements, including the rare-earth. Research on luminescent diketones as an efficient alternative for the generation of OLEDs has increased in recent years, however, the evaluation of parameters such as morphology or excess of the cheating agent is not completely studied. In this work, the synthesis of thenoyltrifluoroacetone (TTA) combined with europium at the different chelating agent and rare earth ratio is presented, founding a change in morphology directed related with optical performance, structural analysis was performed using x-ray diffraction (XRD), and was observed a monoclinic structure in Eu 15% and Eu 20% samples. Morphological analysis was done with scanning electron microscopy (SEM). The TTA5Eu sample presented an irregular morphology with nanometric particles embedded, the TTA15Eu had a morphology of agglomerated particles, and TTA20Eu sample the morphology changes radically to an angular morphology. Nanowires were present in the sample of 25% Eu 3+ . The chemical properties were determined using Fourier transform infrared spectroscopy (FTIR), and the optical properties were measured by photoluminescence (FL). The results showed vibration bands and stretching of the thiophene group, without apparent change due to the chelation of the Eu 3+ .