Luminescent Properties of Eu(III) Chelates on Metal Nanorods

The Journal of Physical Chemistry. C, Nanomaterials and Interfaces
Jian ZhangJoseph R Lakowicz

Abstract

In this article, we report the change of optical properties for europium chelates on silver nanorods by near-field interactions. The silver rods were fabricated in a seed-growth method followed by depositing thin layers of silica on the surfaces. The europium chelates were physically absorbed in the silica layers on the silver rods. The silver rods were observed to exhibit two plasmon absorption bands from longitudinal and transverse directions, respectively, centered at 394 and 675 nm, close to absorption and emission bands from the Eu(III) chelates. As a result, the immobilized Eu(III) chelates on the silver rods should have strong interactions with the silver nanorods and lead to greatly improved optical properties. The Eu-Ag rod complexes were observed to have enhanced emission intensity up to 240-fold in comparison with the Eu(III) chelates in the metal-free silica templates. This enhancement is much larger than the value for the Eu(III) chelates on the gold rods or silver spheres indicating the presence of stronger interactions for the Eu(III) chelates with the silver rods. The interactions of Eu(III) chelates with the silver rods were also proven by extremely reduced lifetime. Moreover, the Eu-Ag rod complexes exhibited ...Continue Reading

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Citations

Aug 24, 2016·ACS Applied Materials & Interfaces·Aleksandr KuchmizhakAndrey Ionin
Jul 2, 2014·Chemical Communications : Chem Comm·Sharmistha Dutta ChoudhuryJoseph R Lakowicz
Aug 26, 2018·Luminescence : the Journal of Biological and Chemical Luminescence·Shilpa BhavsarN L Singh
Jul 10, 2014·Chemical Communications : Chem Comm·Jian ZhangJoseph R Lakowicz

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