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Temporally deuterogenic plasmonic vortices.
Nanophotonics
March 2024
School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK 74078, USA.
Article Synopsis
- - Over the last ten years, there has been growing interest in plasmonic vortices, which are linked to orbital angular momentum and play a key role in light-matter interactions and plasmonic spin-orbit coupling.
- - Traditional methods of studying these vortices in the frequency domain lack detailed insights into their evolution, prompting a new investigation into a unique vortex mode that is only observable in the time domain.
- - The study demonstrates that this temporally varying vortex can be manipulated through design and specific light beams, enhancing our understanding of plasmonic spin-orbit coupling and offering new strategies for optical control in future research.
On-Surface Isomerization of Indigo within 1D Coordination Polymers.
Angew Chem Int Ed Engl
April 2024
Technical University of Munich, TUM School of Natural Sciences, Physics Department E20, James Franck Strasse 1, 85748, Garching, Germany.
Natural products are attractive components to tailor environmentally friendly advanced new materials. We present surface-confined metallosupramolecular engineering of coordination polymers using natural dyes as molecular building blocks: indigo and the related Tyrian purple. Both building blocks yield identical, well-defined coordination polymers composed of (1 dehydroindigo : 1 Fe) repeat units on two different silver single crystal surfaces.
View Article and Find Full Text PDFWater-ultrastable perovskite CsPbBr nanocrystals tailored by surface-confined strategy for amaranth sensing in food samples.
Food Chem
February 2024
School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China; State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China. Electronic address:
A vital challenge is to develop water-stable perovskite nanocrystals owing to the easy attack of its surface vacancy defects by water-molecule. Here, a facile surface-passivated strategy to dramatically improve the chem-stability and luminescent efficiency (LE) of the CsPbBr nanocrystals (CPB) is proposed, where sodium dodecyl sulfate (SDS) encapsulate on CPB, generating confined environment (named SDS@CPB). The flexible long carbon-chain of SDS can confine the movement of CPB to form an externally hydrophobic closed-shell and internally structural rigidity through the hydrophobic association between surface hydrophobic groups, improving the LE and maintaining long-term composition of CPB.
View Article and Find Full Text PDFLanthanide metal-organic network featuring strong perpendicular magnetic anisotropy.
Nanoscale
April 2023
Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nanoscience), Madrid 28049, Spain.
The coordination of lanthanides atoms in two-dimensional surface-confined metal-organic networks is a promising path to achieve an ordered array of single atom magnets. These networks are highly versatile with plenty of combinations of molecular linkers and metallic atoms. Notably, with an appropriate choice of molecules and lanthanide atoms it should be feasible to tailor the orientation and intensity of the magnetic anisotropy.
View Article and Find Full Text PDFDefect Engineering of Ceria Nanocrystals for Enhanced Catalysis via a High-Entropy Oxide Strategy.
ACS Cent Sci
August 2022
Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
Introducing transition-metal components to ceria (CeO) is important to tailor the surface redox properties for a broad scope of applications. The emergence of high-entropy oxides (HEOs) has brought transformative opportunities for oxygen defect engineering in ceria yet has been hindered by the difficulty in controllably introducing transition metals to the bulk lattice of ceria. Here, we report the fabrication of ceria-based nanocrystals with surface-confined atomic HEO layers for enhanced catalysis.
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