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- W2326196710 abstract "Water-soluble derivatives of gadolinium-containing metallofullerenes have been considered to be excellent candidates for new magnetic resonance imaging (MRI) contrast agents because of their high relaxivity and characteristic encapsulation of the lanthanide ions (Gd3+), preventing their release into the bioenvironment. The trimetallic nitride template endohedral metallofullerenes (TNT EMFs) have further advantages of high stability, high relative yield, and encapsulation of three Gd3+ ions per molecule as illustrated by the previously reported nearly spherical, Gd3N@Ih-C80. In this study, we report the preparation and functionalization of a lower-symmetry EMF, Gd3N@Cs-C84, with a pentalene (fused pentagons) motif and an egg-shaped structure. The Gd3N@C84 derivative exhibits a higher 1H MR relaxivity compared to that of the Gd3N@C80 derivative synthesized the same way, at low (0.47 T), medium (1.4 T), and high (9.4 T) magnetic fields. The Gd3N@Cs-C84 derivative exhibits a higher hydroxyl content and aggregate size, as confirmed by X-ray photoelectron spectroscopy (XPS) and dynamic light scattering (DLS) experiments, which could be the main reasons for the higher relaxivity." @default.
- W2326196710 created "2016-06-24" @default.
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- W2326196710 date "2014-02-03" @default.
- W2326196710 modified "2023-09-23" @default.
- W2326196710 title "Gd<sub>3</sub>N@C<sub>84</sub>(OH)<sub><i>x</i></sub>: A New Egg-Shaped Metallofullerene Magnetic Resonance Imaging Contrast Agent" @default.
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- W2326196710 doi "https://doi.org/10.1021/ja412254k" @default.
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