Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Lanthanide-containing molecules have many potential applications in material science and biology, that is, luminescent sensing/labling, MRI, magnetic refrigeration, and catalysis among others. Coordination-directed self-assembly has shown great power in the designed construction of well-defined supramolecular systems. However, application of this strategy to the lanthanide edifices is challenging due to the complicated and greatly labile coordination numbers and geometries for lanthanides. Here we demonstrate a sensitive structural switching phenomenon during the stereocontrolled self-assembly of a group of LnL (Ln for lanthanides, L for organic ligands, and n = 1, 2, 4) compounds. Systematic variation of the offset distances between the two chelating arms on the bis(tridentate) ligands dictated the final outcomes of the lanthanide assembly, ranging from LnL helicates and LnL tetrahedra to LnL cubes. Remarkably, the borderline case leading to the formation of a mixture of the helicate and the tetrahedron was clearly revealed. Moreover, the concentration-dependent self-assembly of an unprecedented cubic LnL complex was also confirmed. The luminescent lanthanide cubes can serve as excellent turn-off sensors in explosives detection, featuring high selectivity and sensitivity toward picric acid. All complexes were confirmed by NMR, ESI-TOF-MS, and single crystal X-ray diffraction studies. Our results provide valuable design principles for the coordination self-assembly of multinuclear functional lanthanide architectures.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/jacs.7b02764 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High-resolution dual-ended readout PET detectors based on 0.5 mm pitch LYSO arrays with various reflectors.
Med Phys
September 2025
Department of Biomedical Engineering, University of California at Davis, Davis, California, USA.
Background: High-resolution and high-sensitivity small-animal positron emission tomography (PET) scanners are essential non-invasive functional imaging tools in preclinical research. To develop small-animal PET scanners with uniform and high spatial resolution across the field-of-view, PET detectors capable of providing good depth-of-interaction (DOI) information are critical. Dual-ended readout detectors based on lutetium-yttrium oxyorthosilicate (LYSO) arrays with fine pitch represent a promising approach, wherein the choice of inter-crystal reflector significantly impacts the detector performance.
View Article and Find Full Text PDFTwo birds with one stone: Versatile lanthanide-doped core-shell-shell nanoparticles with enhanced red upconversion for nanothermometry and MR imaging.
J Colloid Interface Sci
September 2025
Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, University of Electronic Science and Technology of China, Chengdu 610041, China. Electronic address: Zhaoy
Lanthanide-doped fluoride nanoparticles show great potential for optical thermometry and bioimaging. However, their applications are still constrained by inherent limitations in luminescence intensity and functional versatility. To overcome these challenges, we propose a core-active shell-inert shell nanostructure that integrates multifunctional capabilities within a single platform.
View Article and Find Full Text PDFPreclinical Investigations Toward Gd-free Molecularly Targeted Dual-Modal, MRI Dynamic (DCE-MRI)/Optical Imaging Contrast Agent for Cardiac Angiosarcoma.
Top Magn Reson Imaging
October 2025
BIOSPACE LAB, Nesles-la-Vallée, France.
Aims: Cardiac tumors are aggressive and asymptomatic in early stages, causing late diagnosis and locoregional metastasis. Currently, the standard of care uses gadolinium-based contrast agents for MRI, and the associated hypersensitivity reactions are a significant concern, such as gadolinium deposition disease. In addition, the proximity of cardiac lesions closer to vital structures complicates surgical interventions.
View Article and Find Full Text PDFComputational design of metal-organic frameworks with triangular adsorbaphores for highly selective adsorption of -xylene.
Nanoscale
September 2025
Department of Chemical and Biomolecular Engineering, National University of Singapore, 117576, Singapore.
Separation of xylene isomers, serving as indispensable feedstock in the petrochemical industry, is important but significantly challenging due to their similar physicochemical properties. With readily tunable network structures and chemical functionalities, metal-organic frameworks (MOFs) are promising for separation and many other potential applications. Here, we computationally design 150 lanthanide-based MOFs with one-dimensional triangular nanopores by varying metal compositions.
View Article and Find Full Text PDFDesign and Fabrication of Flexible Silk Fibroin/Lanthanide Ion Membranes with Multifunctional Properties of Fluorescence, Humidity Sensitivity, and Conductivity.
ACS Appl Mater Interfaces
September 2025
College of Chemistry and Chemical Engineering, Instrumental Analysis Center of Qingdao University, Qingdao Application Technology Innovation Center of Photoelectric Biosensing for Clinical Diagnosis and Treatment, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Qing
Silk fibroin (SF)-based flexible electronic/photonic materials have gained great attention in wearable devices and soft sensors. However, it remains challenging to understand the molecular interaction mechanisms and subsequently fabricate SF-based flexible materials that exhibit fluorescence, humidity sensitivity, and conductivity properties. In this study, by incorporating lanthanide europium ion (Eu), the design and fabrication of a flexible, fluorescent, and conductive SF membrane was proposed.
View Article and Find Full Text PDF