(TlO)-(LiO)-(BO)-(SmO) glass system with various SmO additives ( = 0, 0.2, 0.4, 0.6) was studied in detail. The vibrational modes of the (TlO)-(LiO)-(BO) network were active at three composition-related IR spectral peaks that differed from those mixed with Samarium (III) oxide at high wavenumber ranges. These glass samples show that their permeability increased with the Samarium (III) oxide content increase. Additionally, the electronic transition between localized states was observed in the samples. The MAC, HVL, and Zeff values for radiation shielding parameters were calculated in the energy range of 0.015-15 MeV using the FLUKA algorithm. In addition, EBF, EABF, and Σ values were also determined for the prepared glasses. These values indicated that the parameters for shielding (MAC, HVL, Z, EBF, EABF, and Σ) are dependent upon the Samarium (III) oxide content. Furthermore, the addition of Samarium (III) oxide to the examined glass samples greatly reinforced their shielding capacity against gamma photon. The findings of the current study were compared to analyses of the XCOM software, some concretes, and lead. In the experiment, it was found that the SMG0.6 glass sample was the strongest shield.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8306404 | PMC |
| http://dx.doi.org/10.3390/nano11071713 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Design and Construction of a Porphyrin-Based Samarium(III)-Metal-Organic Framework for Antibiotic Detection.
Inorg Chem
January 2025
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China.
Porphyrins bearing the unique 18π electron tetrapyrrolic macrocycles exhibit interesting photophysical and photochemical properties and have been considered as promising ligands for the construction of functionalized metal-organic frameworks (MOFs). The combination of porphyrin-type ligands with lanthanide metals featured with diverse coordination environments to realize the novel functions as well as the diversity of the MOF is thus attractive but challenging. Herein, an unprecedented porphyrin-based samarium MOF (Sm-BCPP) composed of a 5,10-bis(4-carboxyphenyl)-10,20-diphenyl porphyrin (HBCPP) ligand and samarium-formed one-dimensional clusters has been constructed via a solvothermal approach, and the synthesized Sm-BCPP has excellent chemical stabilities, exhibiting red luminescence.
View Article and Find Full Text PDFFour-electron reduction of benzene by a samarium(II)-alkyl without the addition of external reducing agents.
Nat Chem
January 2025
School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand.
Benzene reduction by molecular complexes remains an important synthetic challenge, requiring harsh reaction conditions involving group I metals. Reductions of benzene, to date, typically result in a loss of aromaticity, although the benzene tetra-anion, a 10π-electron system, has been calculated to be stable and aromatic. Due to the lack of sufficiently potent reductants, four-electron reduction of benzene usually requires the use of group I metals.
View Article and Find Full Text PDFThe therapeutic use of 177 Lu-PSMA-617 radioligand therapy in prostate cancer treatment: a review of literature and ongoing trials.
Discov Oncol
December 2024
Department of General Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
Radioligand therapy is a targeted cancer treatment modality in which radioisotopes are utilized in the delivery of radiation at targeted cancer cells, with the goal of sparing normal cells. Prostate cancer is a well-known radiosensitive disease, historically treated with radioisotopes such as Strontium-89, Samarium-153, and Radium-223 for palliation of bone metastases. Recently, prostate specific membrane antigen (PSMA) has recently been employed as a radioligand target due to its unique properties of high expression on the surface of prostate cancer cells, limited expression in normal tissue, function as an internalizing cell surface receptor, and increased expression with androgen deprivation therapy.
View Article and Find Full Text PDFSolvatomorphic phase transitions and tunable luminescence emission in lanthanide metal-organic frameworks.
Dalton Trans
January 2025
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
Four new metal-organic frameworks with the formulae [Sm(phen)(NO)(chdc)]·2solv, where solv = ,-dimethylformamide (DMF; 1), ,-dimethylacetamide (DMA; 2), ,-diethylformamide (DEF; 3), -formylpiperidine (NFP; 4), phen = 1,10-phenanthroline and chdc = -1,4-cyclohexanedicarboxylate were synthesized and structurally characterized. These compounds are based on similar binuclear samarium(III)-carboxylate blocks, bound by flexible chdc linkers into layered -type coordination networks. The amide solvents drive different intralayer block orientations between 1 and 2-4 and different layer-to-layer packings in all the described compounds.
View Article and Find Full Text PDFSynthesis of (2,6-Diadamantyl Aryloxide) Ln(II) Complexes of Samarium, Europium, and Ytterbium and Their Ln(III) Precursors.
Inorg Chem
November 2024
Department of Chemistry, University of California, Irvine, California 92697-2025, United States.
The syntheses of Ln(II) (aryloxide) complexes of Sm, Eu, and Yb have been examined with the bulky aryloxide ligand (OCH-2,6-Ad-4-Bu) [(OAr*); Ad = 1-adamantyl]. These Ln(OAr*)(THF) complexes were pursued for comparison with the (aryloxide) Ln(II) complexes [Ln(OAr*)] (Ln = La, Ce, Nd, Gd, Dy, and Lu), which have 4f5d electron configurations, and with 4f [Yb(OAr*)]. Although the Ln(II) chemistry of Sm, Eu, and Yb is often similar since they all adopt 4f electron configurations, their chemistry is surprisingly diverse with (OAr*).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!