Near-Infrared Emissive Discrete Platinum(II) Metallacycles: Synthesis and Application in Ammonia Detection

Two novel discrete organoplatinum­(II) metallacycles are prepared by means of coordination-driven self-assembly of a 90° organoplatinum­(II) acceptor, <i>cis</i>-(PEt₃)₂Pt­(OTf)₂, with two donors, a pyridyl donor, 9,10-di­(4-pyridylvinyl)­anthracene, and one of two dicarboxylate ligands. Both metallacycles display aggregation-induced emission as well as solvatochromism. More interestingly, both metallacycles exhibit near-infrared fluorescent emission in the solid state and can be used to detect ammonia gas