Combined Electrostatic-Covalent Building of Au NPs Multilayers and Their Size-Enhanced Cohesive and SERS Properties

<table>Evolution of the multilayer film thickness versus the number of layers. The measurements were done by ellipsometry. One layer is made of a monolayer of gold nanoparticles with its tethered thiolate molecular film (linker). Dotted line (5 nm size NPs), continuous line (15 nm size NPs).</table>

Advances in Physical Chemistry

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Figure 6

Figure 6: Combined Electrostatic-Covalent Building of Au NPs Multilayers and Their Size-Enhanced Cohesive and SERS Properties 