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. Author manuscript; available in PMC: 2009 Dec 17.
Published in final edited form as: J Am Chem Soc. 2008 Dec 17;130(50):17095–17105. doi: 10.1021/ja8068853

Figure 3.

Figure 3

Characterization of photostability of single Ag nanoparticles and AgMMUA-MAB nanoparticles (SMNOBS):

(A) Dark-field optical image of single Ag nanoparticles, showing two representative colors, (a) blue and (b) green of Ag nanoparticles, and (c) background, as squared, respectively.

(B) Plots of scattering intensity of (a) single green nanoparticle, (b) single blue nanoparticle, and (c) background in (A) versus illumination time, exhibiting that single Ag nanoparticles resist photodecomposition and blinking.

(C) Dark-field optical image of single AgMMUA-MAB nanoparticles, showing two representative colors, (a) blue green and (b) green of Ag nanoparticles, and (c) background, as squared, respectively.

(D) Plots of scattering intensity of (a) single blue green nanoparticle, (b) single green nanoparticle, and (c) background in (C) versus illumination time, exhibiting that single AgMMUA-MAB nanoparticles resist photodecomposition and blinking. Scale bar is 5 μm in (A) and 2 μm in (C), showing the distances among nanoaprticles, but not the sizes of single nanoparticles because they are under optical diffraction limit.