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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: Nanomedicine (Lond). 2011 Jun;6(4):715–728. doi: 10.2217/nnm.11.19

Figure 1. Nanoparticle applications of polyethylene glycol.

Figure 1

(A) The use of NPs in imaging involves different modalities, including optical and radionuclide techniques. In therapy, diverse NPs carry a range of payloads, including radiotherapy, nucleic acids and small molecules. (B) PEGylated NP, indicating a firmer metallic or polymeric core (yellow) with a surrounding cloud of flexible PEG chains (red). (C) Monomers of ethylene glycol are polymerized into PEG for NP coating. PEG contains the linkage group (R1) and a terminus that interacts with solvent (R2).

NP: Nanoparticle; PEG: Polyethylene glycol.