Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 20, Issue 10, Pages 1877-1884Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b922052f
Keywords
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Funding
- CNRS
- Universite Montpellier II
- MAGMANet [FP6-NMP3-CT-2005-515767]
- Portuguese network of electron microscopy
- RNME
- FCT [REDE/1509/RME/2005]
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A new approach to the synthesis of multifunctional nanoparticles was developed by using covalent anchoring of cyano-bridged coordination polymer Ni2+/[Fe(CN)(6)](3-) to the surface of two-photon dyedoped mesoporous silica nanoparticles. The obtained hybrid nanoparticles were studied by infrared (IR) spectroscopy, nitrogen adsorption (BET), X-ray diffraction, transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), luminescence, and magnetic analysis. The synthesis leads to homogeneously dispersed uni-shaped nanoparticles of around 100 nm in length that are coated with cyano-bridged metallic coordination polymer nanoparticles. These hybrid nanoparticles combine effective two-photon excited fluorescence, porosity, high transverse nuclear relaxivity values (i.e. the magnetic resonance imaging efficiency) and superparamagnetic properties.
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