Nanoscale coordination polymers exhibiting luminescence properties and NMR relaxivity (Articolo in rivista)

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Label
  • Nanoscale coordination polymers exhibiting luminescence properties and NMR relaxivity (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • Chelebaeva E., J. Larionova, Y. Guari, R.A.S. Ferreira, L.D. Carlos, A.A. Trifonov, T. Kalaivani, L. Datas, M. Maynadier, M. Gary-Bobo and M. Garcia (2011)
    Nanoscale coordination polymers exhibiting luminescence properties and NMR relaxivity
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Chelebaeva E., J. Larionova, Y. Guari, R.A.S. Ferreira, L.D. Carlos, A.A. Trifonov, T. Kalaivani, L. Datas, M. Maynadier, M. Gary-Bobo and M. Garcia (literal)
Pagina inizio
  • 1200 (literal)
Pagina fine
  • 1210 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 3 (literal)
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  • DOI: 10.1039/c0nr00709a Acknowledgment: The authors thank Mme Corine Reibel (ICGM, Montpellier, France) for magnetic measurements. E.C. thanks the Russian Academy of Science and the French Ministry of Foreign Affairs. The authors also thank the Network of Excellence MAGMANet for funds support. M.G. and M.G.-B. thank Prof. Dr Kurt von Figura (Gottingen) for cell cultures. (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • - Univ Montpellier 2, Inst Charles Gerhardt Montpellier, UMR5253, F-34095 Montpellier 5, France (E. Chelebaeva, J. Larionova, Y.Guari, C. Guerin,) - Univ Aveiro, Dept Phys, CICECO, P-3810193 Aveiro, Portugal (R.A.S. Ferreira, L.D. Carlos, ) - Russian Acad Sci, GA Razuvaev Inst Organometall Chem, Nizhnii Novgorod 603950, Russia (E. Chelebaeva, A.A. Trifonov) - Univ Milan, Dipartimento Sci Mol Applicate Biosistemi, I-20134 Milan, Italy (T. Kalaivani, A. Lascialfari, - CNR Ist Nanosci, Ctr S3, I-41125 Modena, Italy (A. Lascialfari) - Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy (A. Lascialfari) - Ecole Natl Super Chim Montpellier, Inst Charles Gerhardt Montpellier, UMR 5253, F-34296 Montpellier 5, France (K. Molvinger) - Univ Toulouse 3, Serv Commun Microscopie Elect TEMSCAN, F-31062 Toulouse 4, France (L. Datas) - Inst Rech Cancerol Montpellier, F-34298 Montpellier, France (M. Maynadier, M. Gary-Bobo, M. Garcia) - INSERM, U896, F-34298 Montpellier, France (M. Maynadier, M. Gary-Bobo, M. Garcia) - Univ Montpellier 1, F-34298 Montpellier, France (M. Maynadier, M. Gary-Bobo, M. Garcia) - Ctr Reg Lutte Canc, F-34298 Montpellier, France (M. Maynadier, M. Gary-Bobo, M. Garcia) (literal)
Titolo
  • Nanoscale coordination polymers exhibiting luminescence properties and NMR relaxivity (literal)
Abstract
  • This article presents the first example of ultra-small (3-4 nm) magneto-luminescent cyano-bridged coordination polymer nanoparticles Ln(0.33)(3+)Gd(x)(3+)/[Mo(CN)(8)](3-) (Ln = Eu (x = 0.34), Tb (x = 0.35)) enwrapped by a natural biocompatible polymer chitosan. The aqueous colloidal solutions of these nanoparticles present a luminescence characteristic of the corresponding lanthanides ((5)D(0) -> (7)F(0-4) (Eu(3+)) or the (5)D(4) -> (7)F(6-2) (Tb(3+))) under UV excitation and a green luminescence of the chitosan shell under excitation in the visible region. Magnetic Resonance Imaging (MRI) efficiency, i.e. the nuclear relaxivity, measurements performed for Ln(0.33)(3)Gd(x)(3+)/[Mo(CN)(8)](3-) nanoparticles show r(1p) and r(2p) relaxivities slightly higher than or comparable to the ones of the commercial paramagnetic compounds Gd-DTPA (R) or Omniscan (R) indicating that our samples may potentially be considered as a positive contrast agent for MRI. The in vitro studies performed on these nanoparticles show that they maybe internalized into human cancer and normal cells and well detected by fluorescence at the single cell level. They present high stability even at low pH and lack of cytotoxicity both in human cancer and normal cells. (literal)
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