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. Author manuscript; available in PMC: 2019 Feb 27.
Published in final edited form as: ACS Nano. 2018 Apr 16;12(4):3714–3725. doi: 10.1021/acsnano.8b00940

Figure 3.

Figure 3.

Transmission electron microscopy of (a) unstained and (b) stained AuNP conjugates evidenced the formation of fairly monodispersed nanoparticles. (c) TEM image and (d) UV−vis spectra of the same nanoparticle after one year of storage at −20 °C.