Abstract
We systematically examined the effects of π‐electron systems on the chiroptical activity of atomically precise gold clusters [Au11(DP)4L2]+, where DP and L represent chiral diphosphines and achiral anionic ligands, respectively. Reducing the distance between the π‐electron systems of the chiral DP and the Au11 core enhanced the anisotropy factor of [Au11(DP)4L2]+ in the range of 300–450 nm while extension of the π‐electron system of the achiral L did not. This tendency supports our previous proposal that the proximity of the chiral π‐electron system to the gold core amplifies the optical activity.
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