Journal ArticleDOI
Plasmon-assisted spin transition in gold nanostar@spin crossover heterostructures
Roger Sanchis-Gual,Ramón Torres-Cavanillas,Marc Coronado-Puchau,Mónica Giménez-Marqués,Eugenio Coronado +4 more
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In this article, the design of core@shell nanoparticles formed by a metallic Au nanostar core and a spin-crossover shell based on the coordination polymer [Fe(Htrz)2(trz)](BF4) is described.Abstract:
Herein we report the design of core@shell nanoparticles formed by a metallic Au nanostar core and a spin-crossover shell based on the coordination polymer [Fe(Htrz)2(trz)](BF4). This procedure is general and has been extended to other metallic morphologies (nanorods, nanotriangles). Thanks to the photothermal effect arising from the plasmonic properties of the Au nanostar, 60% of iron centers undergo a thermal spin transition inside the thermal hysteresis triggered by a 808 nm laser low intensity irradiation. Compared to other Au morphologies, the great advantage of the nanostar shape arises from the hot spots created at the branches of the nanostar. These hot spots give rise to large NIR absorptions, making them ideal nanostructures for efficiently converting light into heat using low energy light, like that provided by a 808 nm laser.read more
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A State-of-the-Art Review on Core–Shell Pigments Nanostructure Preparation and Test Methods
TL;DR: This paper comprehensively overviewed the state-of-the-art research of core–shell nanomaterials in terms of their preparation and performance evaluation methods, as well as feasible applications, including effective shell materials, including most common silica and titanium oxides.
Posted Content
Near room-temperature memory devices based on hybrid spin-crossover SiO2 nanoparticles coupled to single-layer graphene nanoelectrodes
Anastasia Holovchenko,Julien Dugay,Mónica Giménez-Marqués,Eugenio Coronado,Herre S. J. van der Zant +4 more
TL;DR: In this article, the authors used hybrid SCO NPs covered with a silica shell and placed in between single-layer graphene electrodes to demonstrate the robustness of the spin-transition.
Journal ArticleDOI
Cooperativity and Metal–Linker Dynamics in Spin Crossover Framework Fe(1,2,3-triazolate)2
Anastasia B. Andreeva,Khoa N. Le,Kentaro Kadota,Satoshi Horike,Christopher H. Hendon,Carl K. Brozek +5 more
Journal ArticleDOI
Photo-Thermal Switching of Individual Plasmonically Activated Spin Crossover Nanoparticle Imaged by Ultrafast Transmission Electron Microscopy.
Yaowei Hu,Matthieu Picher,Ngoc Minh Tran,Marlène Palluel,Laurentiu Stoleriu,Nathalie Daro,Stéphane Mornet,Cristian Enachescu,Eric Freysz,Florian Banhart,Guillaume Chastanet +10 more
TL;DR: In this paper, the length changes of individual switchable nanoparticles induced thermally by nanosecond laser pulses are compared with time-resolved optical measurements performed on an assembly of these particles.
Journal ArticleDOI
Harnessing Natural Products by a Pharmacophore‐Oriented Semisynthesis Approach for the Discovery of Potential Anti‐SARS‐CoV‐2 Agents
Yuan-Fei Zhou,Bing-Chao Yan,Qian Yang,Xin-Yan Long,Dan-Qi Zhang,Rong-Hua Luo,Hanbin Wang,Han-Dong Sun,Xiao-Song Xue,Yong Zhang,Pema-Tenzin Puno +10 more
TL;DR: The WRLC reaction enabled the creation of a novel family by assembly of the maoelactone‐type scaffold and the pharmacophore of 2, whereby one derivative inhibited SARS‐CoV‐2 replication in HPA EpiC cells with a low EC50 value (19±1 nM) and a high TI value (>1000), both values better than those of remdesivir.
References
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Journal ArticleDOI
Preparation and Growth Mechanism of Gold Nanorods (NRs) Using Seed-Mediated Growth Method
TL;DR: In this article, a method was used for preparing gold NRs with aspect ratios ranging from 1.5 to 4.5 for which the surface plasmon absorption maxima are between 600 and 1300 nm.
Journal ArticleDOI
Localized Surface Plasmon Resonance Sensors
Kathryn M. Mayer,Jason H. Hafner +1 more
Journal ArticleDOI
Spin-Transition Polymers: From Molecular Materials Toward Memory Devices
O. Kahn,C. Jay Martinez +1 more
TL;DR: In this article, the transition temperature of transition metal compounds can be fine tuned using an approach based on the concept of a molecular alloy, and it is possible to design a compound for which room temperature falls in the middle of the thermal hysteresis loop.
Journal ArticleDOI
Thermo‐plasmonics: using metallic nanostructures as nano‐sources of heat
Guillaume Baffou,Romain Quidant +1 more
TL;DR: In this paper, the physics of heat generation in metal nanoparticles is described, under both continuous and pulsed illumination, and numerical and experimental methods that have been developed to further understand and engineer plasmonic-assisted heating processes on the nanoscale.
BookDOI
Spin-crossover materials : properties and applications
Abstract: The phenomenon of spin-crossover has a large impact on the physical properties of a solid material, including its colour, magnetic moment, and electrical resistance. Some materials also show a structural phase change during the transition. Several practical applications of spin-crossover materials have been demonstrated including display and memory devices, electrical and electroluminescent devices, and MRI contrast agents. Switchable liquid crystals, nanoparticles, and thin films of spin-crossover materials have also been achieved.