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Issue 24, 2010
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Hybrid nanogels by encapsulation of lanthanide-doped LaF3nanoparticles as elemental tags for detection by atomic mass spectrometry

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Abstract

In this article we demonstrate that hybrid nanogels can be prepared by encapsulation of reactive nanoparticles (NPs) directly during nanogel synthesis. Nanogels investigated in present study consist of poly(N-vinylcaprolactam-co-(2-acetoacetoxyethyl) methacrylate) copolymer. The modification of the LaF3:Eu nanoparticle surface with reactive double bonds allows effective incorporation of the NPs into the nanogel structure. This approach ensures effective encapsulation of varying amounts of NPs into the nanogel interior with a loading efficiency close to 95%. The NPs are covalently bound to the nanogel core, and no NP leakage occurs. Reactive NPs act as multifunctional cross-linking agents and increase the cross-linking degree of the nanogels. We demonstrate the possibility of the incorporation of LaF3 nanoparticles doped with different ions (Eu, Tb, Pr, Gd) or nanoparticle mixtures into nanogels. These nanogels exhibit temperature-sensitive properties and superior colloidal stability in water and other aqueous media.

Graphical abstract: Hybrid nanogels by encapsulation of lanthanide-doped LaF3 nanoparticles as elemental tags for detection by atomic mass spectrometry

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Article information


Submitted
19 Jan 2010
Accepted
17 Mar 2010
First published
12 Apr 2010

J. Mater. Chem., 2010,20, 5141-5150
Article type
Paper

Hybrid nanogels by encapsulation of lanthanide-doped LaF3 nanoparticles as elemental tags for detection by atomic mass spectrometry

S. Berger, O. Ornatsky, V. Baranov, M. A. Winnik and A. Pich, J. Mater. Chem., 2010, 20, 5141
DOI: 10.1039/C0JM00075B

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