A series of cyclometalated Pt(II) complexes with Mono- and Di- imidazol-2-ylidene type N-heterocyclic Carbene (NHC) ligands, showing distinct emission properties, were prepared by varying the reaction conditions and structurally characterized. The complexes (3a  and 3b  ) with NCN ligands in a 3?-tridentate coordination mode are highly luminescent at room temperature in either solid state or fluid solution. In contrast, the complexes (4a   and 4b  ) with NCN in a 2?-bidentate coordination mode are very weakly emissive in fluid solution at room temperature. Intense solid-state emission of complex 4b   was recorded and, interestingly, enhanced emission of 4a  upon treating with acidic vapor was observed.                                                               

Cyclometalated platinum(II) complexes with mono- and di- nitrogen-heterocyclic carbenes (NHC) ligands: Synthesis and application in sensoring acidic vapors

243rd National Meeting (2012)

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