Controlling the Luminescence of Gold Quantum Dots by the Plasmonic Effect of Silver Nanoprisms
Controlling the Luminescence of Gold Quantum Dots by the Plasmonic Effect of Silver Nanoprisms
复制标题
通过银纳米棱柱的等离子体效应控制金量子点的发光
DOI：
10.1007/s11468-019-01006-8
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发表时间：
2019
期刊：
影响因子：
3
通讯作者：
Kato Keizo
中科院分区：
文献类型：
--
作者：
Lertvachirapaiboon Chutiparn;Kiyokawa Itaru;Baba Akira;Shinbo Kazunari;Kato Keizo
等离子体纳米结构可用于控制各种发光材料的光致发光性质。在这项工作中，一个有效的等离子体激元诱导的能量转移（淬火）进行了研究。金量子点的发光强度是由银纳米棱镜的局域表面等离子体共振控制的。的猝灭调制的程度之间的光谱重叠的AuQDs和偶极等离子体共振的AgNPrs的光致发光带。此外，在原位控制的AuQDs使用过氧化氢（H2O2）的氧化蚀刻反应的AgNPrs的淬火效果被证明。该技术被进一步开发为H2O2传感器的应用。该系统能够在水溶液中检测1 nM H2O2。
Plasmonic nanostructures can be used to control the photoluminescence properties of various emitting materials. In this work, an efficient plasmon-induced energy transfer (quenching) was investigated. The luminescence intensity of gold quantum dots (AuQDs) was controlled by the localized surface plasmon resonance of silver nanoprisms (AgNPrs). The quenching was modulated by the degree of spectral overlap between the photoluminescence band of AuQDs and the dipole plasmon resonance of AgNPrs. Furthermore, an in situ controlled quenching effect of AuQDs using an oxidative etching reaction of AgNPrs by hydrogen peroxide (H2O2) was demonstrated. This technique was further developed for application as a H2O2sensor. This system was capable of detecting 1 nM H2O2in an aqueous solution.