Effective Fabrication of Silver Nanobowl Array Structure and Its Enhanced Fluorescence Property

doi:10.7503/cjcu20120548

Abstract

Abstract:

Large-area silver nanobowl array was fabricated via thermal evaporation of silver on the self-assembled monolayer of polystyrene nanospheres. The obtained nanobowl array is a micro/nano composite hierarchical structure, composed of silver nanoparticles with average diameter size of ca. 10 nm. The optical absorption spectra indicate that surface plasmon resonance of silver nanoparticles exists on the nanobowl array. Furthermore, the silver nanobowl array and the flat silver film were served as the enhanced fluorescence substrate and the fluorescence spectra of N,N'-di(n-butyl)quinacridone(DBQA) were measured. Compared with the fluorescence intensity on the flat silver film surface, the fluorescence intensity on the silver nanobowl array is greatly enhanced and the silver nanobowl array is an excellent enhanced fluorescence substrate.

Key words: Silver nanobowl array, Self-assemble, Silver nanoparticles, Hierarchical structure, Enhanced fluorescence substrate

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XU Miao-Jun, CHEN Tian-Ran, LI Bin. Effective Fabrication of Silver Nanobowl Array Structure and Its Enhanced Fluorescence Property[J]. Chem. J. Chinese Universities, 2012, 33(11): 2368.

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Effective Fabrication of Silver Nanobowl Array Structure and Its Enhanced Fluorescence Property

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