Fig. 2: Optical and morphological characterizations of chiral GND assemblies. | Nature Communications

Fig. 2: Optical and morphological characterizations of chiral GND assemblies.

From: Concavity-enhanced chiral self-assembly of anisotropic nanoparticles toward strong chiroptical activity

Fig. 2

a Absorption, b CD, and c g-factor spectra of BSA solution, GNDs, and GND assemblies before and after silica coating. SEM images of GND assemblies d before and e, f after silica coating. Inset in d show a TEM image of a GND assembly. Red and blue circles in e indicate the R-type and L-type stacking, respectively. Red and blue colors in f highlight the R-type and L-type stacked assemblies, respectively. g Single-axis TEM tilt-series images of a right-handed GND tetramer with a silica shell (upper) and the geometric models (lower). Red arrows in g indicate the R-type junctions. The self-assembly process was conducted at room temperature (~ 23 °C) for ~ 1.5 h at a BSA concentration of 158 nM. Source data are provided as a Source Data file.

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