Sanchis-Gual Roger, Torres-Cavanillas Ramón, Coronado-Puchau Marc, Giménez-Marqués Mónica, Coronado Eugenio
Instituto de Ciencia Molecular, Universitat de València Catedrático José Beltran 2 46980 Paterna Spain
J Mater Chem C Mater. 2021 Jun 2;9(33):10811-10818. doi: 10.1039/d1tc01943k. eCollection 2021 Aug 26.
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)(trz). 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.
在此，我们报道了由金属金纳米星核和基于配位聚合物Fe(Htrz)(trz)的自旋交叉壳层形成的核壳纳米粒子的设计。该方法具有通用性，并已扩展到其他金属形态（纳米棒、纳米三角形）。由于金纳米星的等离子体特性产生的光热效应，在808 nm激光低强度照射引发的热滞回内，60%的铁中心发生热自旋转变。与其他金形态相比，纳米星形状的巨大优势源于纳米星分支处产生的热点。这些热点产生大量近红外吸收，使其成为利用低能量光（如808 nm激光提供的光）将光有效转化为热的理想纳米结构。
