A bis-carbene amido ligand previously applied to catalytic Pt/Pd chemistry has been adapted in the rational design of a new class of emissive Pt(II) complexes. Unlike the commonly encountered square planar Pt(II) emitter the presented class features a distorted geometry between square planar and tetrahedral ideals. The resulting unusual, semi-rigid structure is expected to affect aggregation and the influence of non-radiative relaxation due to structural reorganization between ground and emissive excited-states. As a proof of concept a set of complexes with simply substituted phenyl acetylides as adjuvant ligands are used to probe the photophysics of the newly designed emissive system. Through guidance from computational models, the emissive properties are tuned leading to the synthesis of a green-emitting Pt(II) complex with high quantum yield, . Finally, we present additional neutral complexes with extended conjugation that emit in the near-IR and cationic complexes with isocyanido ligands that display blue-shifted emission to demonstrate the versatility of this platform.

Rational design of new, emissive Pt(II) systems with high quantum yield

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.