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(a) AFM image of PEGylated reduced graphene oxide (rGO-PEG). (b) SEM and (c) TEM images of the rGO-loaded ultrasmall gold nanorod vesicle (rGO-AuNRVe). (d) TEM image of disassembled rGO-AuNRVe. (e) UV–vis spectra of the aqueous solution of rGO-PEG, small AuNR@CTAB, AuNRVe, a mixture of rGO and AuNRVe, and rGO-AuNRVe. (f) Hydrodynamic diameter distribution of small AuNR@CTAB and rGO-AuNR-Ve in aqueous solution.
