Figure 4 | Scientific Reports

Figure 4

From: Live Intracellular Biorthogonal Imaging by Surface Enhanced Raman Spectroscopy using Alkyne-Silver Nanoparticles Clusters

Figure 4

Structural features of AgNPs after reaction with alkyne-dopamine and DTT. (a) TEM low-magnification micrograph showing a heterogeneous population of single and clustered nanoparticles. Clusters are mostly made by 2–6 AgNPs. (b) Dynamic light scattering analysis showing two main populations with 25 and 120 nm hydrodynamic diameters. (c) TEM and SEM high-magnification images showing the interparticle gaps within the clusters. Gaps appear 1–2 nm wide. The thin organic monolayers of alkyne-dopamine and DTT cannot be clearly observed.

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