Contrast agents nanomaterials

In particular for fullerenes, antioxidant properties and photodynamic activity are presented in detail, together with the analysis of gadolinium endohedrals as magnetic resonance imaging (MRI) contrast agents. Moreover, drag delivery based on carbon nanomaterials has been illustrated. 

Narayanan, T.N., et al., Hybrid 2D nanomaterials as dual-mode contrast agents in cellular imaging. Advanced Materials, 2012. 24(22) p. 2992-8. 

Recent advances in nanotechnology and nanomaterials provides several different novel approaches to PDT [140,276], First, NPs can improve the delivery of photosensitizers, as they are postulated to do with many other imaging contrast agents or therapeutic compounds [140, 276-278], Second, some NPs are photochemically active. Thus, for example, porous silicon NPs, with a huge surface-to-volume ratio,... 

It then has a magnetic pole Qust like the north and south pole of Earth). All of the poles of the atoms can align with each other collectively, thus increasing the total magnetic character of the nanomaterial. They can be put in the place where they are required, either to deliver specific drugs or to act as contrast agents to improve imaging quality for example. 

Many of the proposed magnetic nanomaterials for the applications as contrast agents for MRI are coated by micro- and mesoporous silica obtained by standard sol-gel procedures. The essential nontoxicity of silica, the existence of simple functionalization procedures for surface silanol groups and their porosity, made this material the ideal choice for the production of multifunctional contrast agents (MRI and luminescent) with capability of drug delivery. 

Table 26.1 Magnetic nanomaterials for the applications as contrast agents for magnetic resonance imaging (MRI) coated by micro- and mesoporous silica obtained by standard sol-gel procedures.

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