| abstract |
The present invention relates to nanoparticles of a metal chosen among platinum, bismuth or a mixture thereof, which are functionalised at their surface by functionalised polyethylene glycol, comprising in particular at least one OH, COOH, NH 2 or SH function, and to their method of preparation, which comprises the following steps : a) mixing a nanoparticle precursor with a functionalised polyethylene glycol, comprising in particular at least one OH, COOH, NH 2 or SH group in water; b) exposing the mixture to ionising radiation. |