Polymorphic layered lanthanide coordination polymers provide opportunities to study the effect of intralayer and interlayer interactions on their magnetic dynamics. Herein we report a series of layered lanthanide phosphonates, namely, α-Ln(2-qpH)(SO)(HO) (Ln = Sm) (α-Ln), β-Ln(2-qpH)(SO)(HO) (Ln = Pr, Nd, Sm) (β-Ln) and γ-Ln(2-qpH)(SO)(HO) (Ln = La, Ce, Pr, Nd, Sm) (γ-Ln) (2-qpH = 2-quinolinephosphonic acid), which crystallize in monoclinic 2/ (α-Ln), triclinic 1̄ (β-Ln) and orthorhombic (γ-Ln) space groups, respectively. The structural differences between the β- and γ-phases lie not only in the intralayer but also in the interlayer. Within the layers, the LnO dimers are aligned parallel in the β-phase, but are non-parallel in the γ-phase. In the interlayer, there are π-π interactions between the quinoline groups in the α- and β-phases but not in the γ-phase. Magnetic studies reveal a field-induced slow relaxation of the magnetisation at low temperatures for compounds γ-Ce, β-Nd, and γ-Nd, and the impact of polymorphism on the magnetic dynamics of Nd(III) compounds is discussed.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d3dt01698f | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Mesoporous Lanthanum-Doped Magnesium Phosphate Nanopowders Promote Healing of Critical-Size Bone Defects: An In Vivo Study.
J Biomed Mater Res B Appl Biomater
January 2025
Refractories, Ceramics and Building Materials Department, Advanced Materials Technology and Mineral Resources Research Institute, National Research Centre, Cairo, Egypt.
Treating severe bone deformities and abnormalities continues to be a major clinical hurdle, necessitating the adoption of suitable materials that can actively stimulate bone regeneration. Magnesium phosphate (MP) is a material that has the ability to stimulate the growth of bones. The current study involved the synthesis of mesoporous MP and lanthanum (La)-doped nanopowders using a chemical precipitation approach.
View Article and Find Full Text PDFLanthanide binding peptide surfactants at air-aqueous interfaces for interfacial separation of rare earth elements.
Proc Natl Acad Sci U S A
December 2024
Department of Chemical Engineering, The City College of New York, New York, NY 10031.
Rare earth elements (REEs) are critical materials to modern technologies. They are obtained by selective separation from mining feedstocks consisting of mixtures of their trivalent cation. We are developing an all-aqueous, bioinspired, interfacial separation using peptides as amphiphilic molecular extractants.
View Article and Find Full Text PDFLate Gadolinium Enhancement of Nonischemic Cardiomyopathy at 5.0 T versus 3.0 T: A Crossover Design Study.
Radiol Cardiothorac Imaging
December 2024
From the Department of Radiology, Zhongshan Hospital, Fudan University, Xuhui District, Shanghai 200032, China (X.Q., S.W., Y.W., X.M., Y.C., H.L., H.J., M.Z.); Shanghai Institute of Medical Imaging, Shanghai, China (X.Q., S.W., Y.W., X.M., Y.C., H.L., H.J., M.Z.); and United Imaging Health Care Group, Shanghai, China (R.W., D.W., F.W., S.Z., J.H.).
Purpose To compare the acquisition time, image quality, and late gadolinium enhancement (LGE) visualization and quantification on phase-sensitive inversion recovery (PSIR) images using 5.0-T versus 3.0-T cardiac MRI.
View Article and Find Full Text PDFSynthesis, Structural, and Raman Investigation of Lanthanide Nitride Powders ( = La, Ce, Nd, Sm, Gd, Tb, Dy, Er, Lu).
ACS Omega
December 2024
The MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6140, New Zealand.
Lanthanide nitride (N) materials have garnered significant interest in recent years due to their promising potential as heterogeneous catalysts for green ammonia synthesis under low temperature and pressure reaction conditions. Here, we report on the synthesis of an extended series of lanthanide () nitride powders ( = lanthanum, cerium, neodymium, samarium, gadolinium, terbium, dysprosium, erbium, lutetium) and their structural and vibrational properties. Polycrystalline powders were fabricated using a ball milling mechanochemical process, and their structural properties were assessed by X-ray diffraction (XRD) and transmission electron microscopy (TEM).
View Article and Find Full Text PDFEfficacy of 3D-printed chitosan‑cerium oxide dressings coated with vancomycin-loaded alginate for chronic wounds management.
Carbohydr Polym
February 2025
Marquette University School of Dentistry, Milwaukee, WI 53233, USA; Institute for Engineering in Medicine, Health, & Human Performance (EnMed), Batten College of Engineering and Technology, Old Dominion University, Norfolk, VA 23529, USA.
Multifunctional wound dressings with antibacterial and antioxidant properties hold significant promise for treating chronic wounds; however, achieving a balance of these characteristics while maintaining biocompatibility is challenging. To enhance this balance, this study focuses on the design and development of 3D-printed chitosan-matrix composite scaffolds, which are incorporated with varying amounts of cerium oxide nanoparticles (0, 1, 3, 5, and 7 wt%) and subsequently coated with a vancomycin-loaded alginate layer. The structure, antibiotic drug delivery kinetics, biodegradation, swelling, biocompatibility, antibacterial, antioxidant, and cell migration behaviors of the fabricated dressings were evaluated in-vitro.
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!