In agreement with recent reports on tbbpyRuPt, the bimetallic dyad prbimRuPt exhibits nearly no emission upon photoexcitation in the visible region. This phenomenon was previously attributed to coordination to the Pt center, which quenches the typical ligand-to-Ru LMCT emission observed in the mononuclear complexes because the electron density is shifted towards this catalytic center. Likewise, this argument can be used in prbimRuPt, since the long-lived state shows an excess of electron density on the phz part of the bridge. Although a phz-centered state is also populated for the mononuclear counterpart prbimRu, this complex shows emission, underlining the impact of the catalysis center. Nonetheless, the respective quantum yield (Φem =1 %) is lower than that of, e.g., tbbpyRu (Φem =8 %, cf. ESI section 5.1). Thus, we assume that the comparably short lifetime of both prbim-type complexes contributes to the virtually absent emission in prbimRuPt.