| abstract |
Magnetic nanoparticles on which are grafted, via a phosphonate or carboxylate bond, several dendritic structures of formula (I) (D) m (I) D comprising at least one group of benzyl alcohol type, said benzyl ring being substituted either at the 3, 4, 5 or at the 3 and 5 positions by chains composed of oligoethylene glycol units, at least one of said oligoethylene glycol chains being functionalized at its end by a biocompatible dye and m = 1, 2 or 4. |