Abstract : The enantiomeric relationship of chiral luminescent square‐planar platinum complexes is confirmed by circular dichroism traces, as shown for the functionalized Pt( t ‐Bu3 terpy) chromophore. The chiral organometallic ligand controls the homochiral or heterochiral solid‐state aggregation through π–π and Pt–Pt interactions. These complexes are highly luminescent in the crystalline state; their photophysical properties arise from solid‐state aggregation. More information can be found in the Communication by V. W. W. Yam, H. Amouri et al. onpage 8032 ff.