Plasmonic core-shell luminescent nanoparticles: A self-supporting sensing platform

等离激元核壳发光纳米粒子：自支撑传感平台

• 批准号: RGPIN-2015-06468
• 负责人: Boudreau, Denis
• 金额: $ 2.55万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=632626
• 关键词: Plasmonic; core; shell; luminescent; nanoparticles

The confinement of electromagnetic fields within metallic nanoparticles is at the origin of the optical phenomenon known as localized surface plasmon resonance (LSPR). This confinement is associated with large enhancements in local field intensity, which lead in turn to significant increases in the quantum yield and radiative rates of fluorescent species placed close to the metal surface. Furthermore, one can take advantage of the LSPR frequency’s dependence on the composition, geometry, size and dielectric environment of metallic nanoparticles to design optimal nanostructures able to enhance the emission intensity of fluorophores across the spectrum from UV to the near infrared (NIR).

金属纳米颗粒内电磁场的限制是被称为局部表面等离子体共振（LSPR）的光学现象的起源。这种限制与局部场强度的大幅增强有关，这反过来又导致靠近金属表面放置的荧光物质的量子产率和辐射率显著增加。此外，人们可以利用LSPR频率对金属纳米颗粒的组成、几何形状、尺寸和介电环境的依赖性来设计能够在从UV到近红外（NIR）的光谱范围内增强荧光团的发射强度的最佳纳米结构。