Synthesis, growth and photoluminescence behaviour of Gd₂O₂SO₄:Eu³⁺nanophosphors: the effect of temperature on the structural, morphological and optical properties

Abstract

Gd 2 (SO 4 ) 3 ·8H 2 O , Gd 2 O 2 SO 4 , and Gd 2 O 2 SO 4 :Eu 3+ nanoparticles have been synthesized in the presence of Gd 3+ ion and sodium dodecyl sulphate (SDS) by the simple complexationthermal decomposition (CTD) method. The structural analysis, growth mechanism and optical properties of the Gd 2 (SO 4 ) 3 ·8H 2 O, and Gd 2 O 2 SO 4 is described by diffraction pattern, functional group analysis, Raman, morphology, elemental analysis, and absorbance spectra. The most intriguing future was that the Gd 2 O 2 SO 4 nanoplates are in the range of 42-50 nm without adding any external stabilizer. The study results revealed that the Gd 2 O 2 SO 4 nanoparticles with orthorhombic structure are having a band gap of 3.12 eV. Furthermore, Gd 2 O 2 SO 4 shows an intense red photoluminescence associated with the 5 D 0 → 7 F 2 transition in the presence of Eu 3+ .The results suggest that the Gd 2 O 2 SO 4 :Eu 3+ nanophosphors, may have a beneficial approach in the field of biomedical application as luminescent probe/labels.

Synthesis and Characterization of Gd2O2SO4:Pr3+ Scintillation Material Produced by Sol-Gel Process for Digital Imaging System

“…These results showed that the rod-like structure was more stable than the spherical structure. In the study by Manigandan et al, a similar microstructure was already obtained [8]. Figure 4a and b shows the excitation and emission spectra of GOS:Pr 3+ nanoparticles.…”

Pyridine-2,6-dicarboxylic acid for the sensitization of europium(iii) luminescence with very long lifetimes

“…The unique luminescence properties of lanthanide(III) ions, such as sharp emission, large Stokes shi, insensitivity to oxygen and particularly their long excited state lifetimes, ranging from microseconds (Yb, Nd) to milliseconds (Eu, Tb), triggered the development of optical imaging, 1 time-resolved bio-labelling probes, 2 luminescent probes, 3 OLED, 4 and lasing systems. 5 The emission originates from 4f-4f intra-atomic electronic and magnetic dipole transitions that are parityforbidden.…”

“…As such, the absorption coefficients of the optical transitions for these ions are, however, extremely low, which limits their practical application considerably. 7,8 The tridentate dipicolinate anions (dipic 2À ) formed various anionic homoleptic complexes [Ln(dipic) 3 ] 3À , which completely satised the eight and nine coordination requirements of lanthanide(III) and showed a reasonable stability with respect to ligand dissociation, even in the presence of polar solvents. The luminescent ligands act as antenna chromophores analogous to the light harvesting center in photosynthetic systems.…”

Biological Evolution of New Intercalated Layered Double Hydroxides: Anticancer, Antibacterial and Photocatalytic Studies

“…DRS UV‐Vis spectra of synthesized pristine and intercalated ZANF are shown in Figure a. The band gap (Eg) was calculated by using equation (2): Kubelka–Munk function versus photon energy plot was used (inset in Figure a). …”