NMR Relaxation Enhancement of Water Protons by Gd-Doped Boron Nitride Nanotubes (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• NMR Relaxation Enhancement of Water Protons by Gd-Doped Boron Nitride Nanotubes (Articolo in rivista) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1021/jp412091t (literal)

Alternative label

• Calucci, Lucia; Ciofani, Gianni; Mattoli, Virgilio; Mazzolai, Barbara; Boni, Adriano; Forte, Claudia (2014)
  NMR Relaxation Enhancement of Water Protons by Gd-Doped Boron Nitride Nanotubes
  in Journal of physical chemistry. C
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Calucci, Lucia; Ciofani, Gianni; Mattoli, Virgilio; Mazzolai, Barbara; Boni, Adriano; Forte, Claudia (literal)

Pagina inizio

• 6473 (literal)

Pagina fine

• 6479 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 118 (literal)

Rivista

• Journal of physical chemistry. C (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 7 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 12 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Consiglio Nazionale delle Ricerche (CNR); Istituto Italiano di Tecnologia - IIT; Istituto Italiano di Tecnologia - IIT (literal)

Titolo

• NMR Relaxation Enhancement of Water Protons by Gd-Doped Boron Nitride Nanotubes (literal)

Abstract

• The longitudinal NMR relaxation rate (RI) of water protons was measured on aqueous suspensions of Gd@BNNTs (i.e., boron nitride nanotubes doped with 0.4% w/w of Gd) coated with glycol-chitosan in the 0.01-30.0 MHz Larmor frequency range, by using a fast field-cycling relaxometer. The dispersion curve of the relaxivity (r(1)) relative to Gd, determined exploiting R-1 data from Gd@BNNT and BNNT suspensions, shows a logarithmic dependence on frequency which is characteristic of a relaxation enhancement dominated by an outer sphere mechanism governed by two-dimensional diffusion of water in proximity of Gd3+ ions on the BNNT surface. Quantitative information on water diffusion and affinity for the surface was obtained by analyzing the r(1) NMRD curves in terms of a model for two-dimensional diffusion. The effects of the nanotube assembly in water and of the coating hydrophilicity on the interactions between water molecules and Gd3+ ions governing the proton relaxation enhancement at the basis of contrast in magnetic resonance imaging (MRI) are discussed. (literal)

Prodotto di

• Spettroscopie di risonanza magnetica applicata alla scienza dei materiali (MD.P03.035.002) (Modulo)
• Istituto di chimica dei composti organo metallici (ICCOM) (Istituto)

Autore CNR

• LUCIA CALUCCI (Persona)
• CLAUDIA FORTE (Persona)

Insieme di parole chiave

• Keywords of "NMR Relaxation Enhancement of Water Protons by Gd-Doped Boron Nitride Nanotubes" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto di chimica dei composti organo metallici (ICCOM) (Istituto)
• Spettroscopie di risonanza magnetica applicata alla scienza dei materiali (MD.P03.035.002) (Modulo)

Autore CNR di

• CLAUDIA FORTE (Persona)
• LUCIA CALUCCI (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of physical chemistry. C (Rivista)

Insieme di parole chiave di

• Keywords of "NMR Relaxation Enhancement of Water Protons by Gd-Doped Boron Nitride Nanotubes" (Insieme di parole chiave)