Plasmon Tunability of Gold Nanostars at the Tip Apexes

Plasmon Tunability of Gold Nanostars at the Tip Apexes
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DOI:
10.1021/acsomega.8b02686
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发表时间:
2018-12-01
期刊:
影响因子:
4.1
通讯作者:
Alvarez-Puebla, Ramon A.
Alvarez-Puebla, Ramon A.
中科院分区:
化学3区
文献类型:
--
作者:
Pazos-Perez, Nicolas;Guerrini, Luca;Alvarez-Puebla, Ramon A.

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在此,我们提出了一种优化的自下而上的方法来制造均匀的Au纳米星与等离子体共振之间的红色和红外线完全可调。该合成方法依赖于反应物浓度优化后的反应动力学控制(即,金晶种、还原剂和金盐)。利用可见光和红外激光的表面增强拉曼Sers证实了所得材料的光学增强特性。
Herein, we present an optimized bottom-up approach to fabricate homogeneous Au nanostars with plasmon resonances fully tunable between the red and the infrared. The synthetic method relies on the kinetic control of the reaction upon optimization of the reactant concentrations (i.e., gold seeds, reducing agent, and gold salt). Optical enhancing properties of the obtained materials are demonstrated by using SERS with visible and infrared lasers.