“…For instance, the square planar platinum(ii) diimine complex [Pt(bpy)Cl 2 ] exhibits polymorphic behavior and rich photophysical properties [142][143][144]. These, together with the recent growing development of platinum alkynyl systems [98,122,125,[145][146][147], mainly due to the unique properties of the CcC group, including versatile reactivity, peculiar nonlinear optical, liquid crystal and photophysical properties [98,122,125,145,147], have led to the synthesis of highly luminescent platinum polypyridyl alkynyl complexes. In 1994, Che and coworkers reported the synthesis of a luminescent platinum diimine alkynyl complex, [Pt(phen)(CcCC 6 H 5 ) 2 ] [130], and the emissions were assigned as derived from dp(Pt) !…”