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 degrees organoplatinum(II) acceptor, cis-(PEt3)(2)Pt-(OTf)(2), with two donors, a pyridyl donor, 9,10-di(4pyridylvinyl)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.