Figure 4: Chiroptical response of α-HgS nanostructures with interplay between crystallographic and geometric handedness.
From: Cooperative expression of atomic chirality in inorganic nanostructures
(a) Summary of g factors of α-HgS nanoparticles, possessing chiral (+)C-lattice but different achiral morphology. (b) Wavelength dependent evolution of g-factor peaks with size for the (+)C-M twisted triangular bipyramid α-HgS nanoparticles. In (a,b) projections of the g factors onto the basal plane are also presented to highlight wavelength shifting of peak position. (c) Comparison of CD spectra of 85 nm long twisted bipyramid α-HgS nanoparticles with different combination of crystallographic and geometric handedness. Red, (+)C-M. Orange, (+)C-P. Cyan, (−)C-M. Blue, (−)C-P. (d) Computed CD spectra to compare with c. Colour codes are assigned to be the same as those in c. The experimental dissymmetric g-factor and its associated error bar are determined as average and standard deviation of statistical analysis over different sample batches and different runs of measurement, respectively.
