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Fabrication and SERS properties of complex and organized nanoparticle plasmonic clusters stable in solution.
Nanoscale ( IF 5.8 ) Pub Date : 2020-07-06 , DOI: 10.1039/d0nr04167j Maria Blanco-Formoso 1 , Nicolas Pazos-Perez 1 , Ramon A Alvarez-Puebla 2
Nanoscale ( IF 5.8 ) Pub Date : 2020-07-06 , DOI: 10.1039/d0nr04167j Maria Blanco-Formoso 1 , Nicolas Pazos-Perez 1 , Ramon A Alvarez-Puebla 2
Affiliation
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SERS activity can be increased by the formation of hot spots at the interparticle junctions of plasmonic nanoparticles in very close proximity, dramatically improving the enhancement factors in comparison with isolated nanoparticles. Controlling the number and geometrical architecture of hot spots, while endowing the clusters with colloidal stability, results in feasible optical sensors, able to provide quantitative SERS responses. Here, we review the approaches proposed to date to produce colloidal stable clusters, focusing on the control of the coordination number of nanoparticle assemblies and interparticle gaps. Clusters of spherical nanoparticles of the same size and rods of the same size are described to subsequently outline core-satellite constructs of nanoparticles of different sizes. Besides, purification processes for nanoparticle clusters are revised to provide efficient production in high yields.
中文翻译：
复杂和有组织的纳米等离激元簇在溶液中稳定的制备和SERS性质。
SERS活性可以通过在非常接近的等离子体纳米粒子的粒子间连接处形成热点来提高，与分离的纳米粒子相比，极大地提高了增强因子。控制热点的数量和几何结构，同时使胶团具有团簇稳定性，可得到可行的光学传感器，能够提供定量的SERS响应。在这里，我们审查迄今为止提出的生产胶体稳定簇的方法，重点是控制纳米颗粒组装体和颗粒间间隙的配位数。描述了相同大小的球形纳米颗粒和相同大小的棒的簇，以随后概述不同尺寸的纳米颗粒的核-卫星构造。除了，
更新日期：2020-07-23
中文翻译：
复杂和有组织的纳米等离激元簇在溶液中稳定的制备和SERS性质。
SERS活性可以通过在非常接近的等离子体纳米粒子的粒子间连接处形成热点来提高，与分离的纳米粒子相比，极大地提高了增强因子。控制热点的数量和几何结构，同时使胶团具有团簇稳定性，可得到可行的光学传感器，能够提供定量的SERS响应。在这里，我们审查迄今为止提出的生产胶体稳定簇的方法，重点是控制纳米颗粒组装体和颗粒间间隙的配位数。描述了相同大小的球形纳米颗粒和相同大小的棒的簇，以随后概述不同尺寸的纳米颗粒的核-卫星构造。除了，
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