FIGURE 1.

Optical rotation by (R)- and (S)-PO in pure aqueous solutions (●) and in solutions containing Au nanoparticles modified with D- and L-cysteine. The data from the solutions containing the heterochiral pairs ((R)-PO/L-cys and (S)-PO/D-cys) are marked with solid squares (■). The data from solutions containing the homochiral pairs ((R)-PO/D-cys and (S)-PO/L-cys) are marked with solid triangles (▲). The solid and dashed lines mark the fits of the adsorption model described in the text. The deviations between the data for the homochiral and the heterochiral pairs are indicative of the enantiospecific interaction of (R)- and (S)-PO with the chiral Au nanoparticles. The figure and caption have been adapted with permission from Shukla et al., (2010), Copyright ^© 2010 American Chemical Society.