English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

Elevated-temperature polyol-based colloidal-chemistry approach allows for thedevelopment of size-tunable (50 and 86 nm) assemblies of maghemite iso-orientednanocrystals, with enhanced magnetization. 1H-Nuclear Magnetic Resonance (NMR)relaxometric experiments show that the ferrimagnetic cluster-like colloidalentities exhibit a remarkable enhancement (4 to 5 times) in the transverserelaxivity, if compared to that of the superparamagnetic contrast agentEndorem, over an extended frequency range (1-60 MHz). The marked increase ofthe transverse relaxivity r2 at a clinical magnetic field strength (1.41 T),which is 405.1 and 508.3 mM-1 s-1 for small and large assemblies respectively,allows to relate the observed response to the raised intra-aggregate magneticmaterial volume fraction. Furthermore, cell tests with murine fibroblastculture medium confirmed the cell viability in presence of the clusters. Wediscuss the NMR dispersion profiles on the basis of relaxivity models tohighlight the magneto-structural characteristics of the materials for improvedT2-weighted magnetic resonance images.

Colloidal Assemblies of Oriented Maghemite Nanocrystals and their NMR Relaxometric Properties