Abstract
Metal enhanced fluorescence of Oxazine720 fluorophore with gold and gold/silver core–shell nanorods is investigated experimentally in aqueous solution system. Metallic nanorods are synthesized for providing proper localized surface plasmon resonance and necessary enhancement to the fluorophore molecule. The experimental observation shows that the fluorescence enhancement increases firstly and then decreases when the concentration of metallic nanorods increases, which is resulted by the competition between enhanced emission and inner-filtering effect. Further investigation with different amounts of metallic nanorods shows that the relationship between metal enhanced fluorescence and spectral correlation strongly depends on the concentration of metallic nanorods.
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