Nano Archive

Synthesis of Eu(III): naphtoyltrifluoroacetone:trioctylphosphineoxide complex-doped silica fluorescent nanoparticles through a new approach

Yin, Dongguang and Liu, Binhu and Zhang, Le and Wu, Minghong (2011) Synthesis of Eu(III): naphtoyltrifluoroacetone:trioctylphosphineoxide complex-doped silica fluorescent nanoparticles through a new approach. Journal of Nanoparticle Research, 13 (12). pp. 7271-7276.

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Abstract

In this study, a new approach for the preparation of a fluorescent europium(III) complex-doped silica nanoparticles has been developed. The synthesis process involved the following steps: (1) preparing silica nanoparticles by water-in-oil microemulsion method, (2) dyeing the spherical silica particles by europium(III): naphtoyltrifluoroacetone (NTA):trioctylphosphineoxide (TOPO), (3) adsorbing polyvinylpyrrolidone (PVP) onto the core structure and growing silica on PVP surface. The as-prepared nanoparticles exhibited stronger emission intensity, higher photo- and chemical stability. Despite the fact that europium(III) complex was doped into the nanoparticles, its fluorescence properties such as a wide Stokes shift, a narrow emission peak, and long fluorescence lifetime, were retained. The nanoparticles are uniform in shape and size (50 ± 5 nm in diameter). This study could provide new avenue for the fabrication of Eu: NTA:TOPO-based nanoparticles, facilitating their application in bioassay issues.

Item Type:Article
ID Code:11396
Deposited By:Prof. Alexey Ivanov
Deposited On:05 Jan 2012 09:29
Last Modified:05 Jan 2012 09:42

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