A new class of potential magnetic resonance imaging contrast agents with nanosized mesoporous silica as the metal carrier is reported. Gadolinium-incorporated mesoporous silicas were synthesized by using long-chain surfactant as a template. The products were characterized with X-ray powder diffraction, nitrogen adsorption-desorption isotherms, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, 29Si-MAS NMR, and proton relaxivity. The materials showed much higher relaxivities, r1 and r2, than Gd-DTPA. The particles are nanosized and can enter cells easily. This is a completely novel biomedical application of mesoporous silica materials.
|Number of pages||4|
|Journal||Journal of Physical Chemistry B|
|Publication status||Published - Oct 7 2004|
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry