Review Article

Shape-Controlled Metal Nanoparticles and Their Assemblies with Optical Functionalities

Figure 8

TEM images of CTAB-covered AuNRs after reaction with (a) citrate-stabilized AuNSs and (b) CTAB-stabilized AuNSs. The bare ends of AuNRs adsorb the citrate-stabilized AuNSs, whereas CTAB-stabilized AuNSs only accumulate near the sides of AuNRs. CTAB tends to be adsorbed by the sides of AuNRs in solutions containing a low concentration of CTAB. Scale bars are 100 nm. Reproduced with permission from [32]. Copyright 2008 American Chemical Society.
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