Two new sandwich-type lanthanide complexes with the general formula [(Pc)2Ln3(L)(OAc)(OCH3)2] (Ln(3+) = Dy(3+) () and Er(3+) ()) were successfully synthesized and structurally characterized based on closed-macrocyclic Schiff base and phthalocyanine molecules. The magnetic properties and structure-property relationship in this multi-decker system were investigated. Interestingly, the corresponding dysprosium complex shows typical single-molecule magnetic behavior with ferromagnetic dipole-dipole interactions and the slow relaxation of magnetization.
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http://dx.doi.org/10.1039/c6dt00683c | DOI Listing |
J Phys Chem A
January 2025
Department of Chemical and Materials Engineering, University of Nevada Reno, Reno, Nevada 89557, United States.
Single-molecule magnets (SMMs) with slow relaxation of magnetization and blocking temperatures above that of liquid nitrogen are essential for practical applications in high-density data storage devices and quantum computers. A rapid and accurate prediction of the effective magnetic relaxation barrier () is needed to accelerate the discovery of high-performance SMMs. Using density functional theory and multireference calculations, we explored correlations between , partial atomic charges, and the anisotropic barrier for a series of sandwich-type lanthanide complexes containing cyclooctatetraene, substituted cyclopentadiene, phospholyl, boratabenzene, or borane ligands.
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April 2025
State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China. Electronic address:
In this study, we used meso-tetra (4-carboxyphenyl) porphyrin (TCPP) as an organic ligand to modify a lanthanide-based metal-organic framework as an electrochemiluminescence (ECL) platform to sensitively detect anti-Müllerian hormone (AMH). La-MOF amplified the ECL signal by suppressing the aggregation-caused quenching created by TCPP self-aggregation. Utilizing the reversible cycling of the mixed-valence transition metal ion (Cu/Cu and Mo/Mo) and the electrical conductivity of CuMoS and silver nanoparticle (AgNP), CuMoS-AgNP as a dual co-reaction promoter constantly generated sulfate radical anions (SO) and thus amplified the ECL signal.
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February 2025
State Key Laboratory of Analytical Chemistry for Life and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
Mikrochim Acta
October 2024
College of Chemistry, Guangdong University of Petrochemical Technology, Guandu Road, Maoming, Guangdong, 525000, People's Republic of China.
A sandwich-type electrochemical aptasensor for ultrasensitive detection of glypican-3 (GPC3) was constructed using GPC3 aptamer (GPC3) labelled reduced graphene oxide-cerium oxide-gold nanoparticles (RGO-CeO-Au NPs) as the signal probe and the same GPC3 as the capture probe. The electrochemical redox properties of CeO (Ce/Ce) in the RGO-CeO-Au NPs indicate the electrochemical signals. When the target GPC3 was present, an "aptamer-protein-aptamer" sandwich structure was formed on the sensing interface due to the specific binding between the protein and aptamers, resulting in an increased electrochemical redox signal detected by differential pulse voltammetry (DPV) technique.
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August 2024
Departamento de Química Orgánica e Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.
Replacement of the heteroatom from Si to Ge has a strong influence on the luminescence properties of a series of hybrid, sandwich-type K[Ln(α-GeWO)(CHBrNO)]·14HO (1Ge-Ln, Ln = Sm to Lu) anions. Interestingly, the Gd and Yb derivatives retain their ability to display slow relaxation of magnetisation.
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