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Characterization of gold nanovesicles. (a,b) SEM (a) and TEM (b) images of the Au@PEG/PMMA vesicles. (c) UV-visible spectra of the amphiphilic Au@PEG/PMMA in chloroform (red line) and the vesicles in water with different ratios of PEG and PMMA (black and blue lines). (d) Hydrodynamic diameter distribution (Dn) of the gold nanoparticles (red line) and Au@PEG/PMMA vesicles (blue line).
