The two homochiral AgRh nanoclusters, Δ/Λ-[AgS{Rh(apt)}] ([]) and Δ/Λ-[AgS{Rh(apt)}] ([]), in which AgS and AgS cluster cores, respectively, are protected by -[Rh(apt)] metalloligands, were newly synthesized from -[Rh(apt)] (Hapt = 3-aminopropanethiol) and Ag in water in combination with sulfide sources. While [] was produced by using d-penicillamine as a sulfide source, the use of HS as a sulfide source afforded [] without causing any precipitation of AgS. Cluster [] was convertible to [] via the reaction with Ag, which led to a turn-on-type switch in photoluminescence from nonemissive [] to emissive [].
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