Deep-blue phosphorescence from platinum(ii) bis(acetylide) complexes with sulfur-bridged dipyridyl ligands.

ABSTRACT: New approaches to prepare rarer emitters such as those that are deep-blue are needed to advance OLED technologies. Here, we demonstrate that a series of new platinum(ii) bis(acetylide) complexes [Pt(N-N)(C[triple bond, length as m-dash]CPh)₂] containing sulfur-bridged dipyridyl ligands (N-N) with various sulfur oxidation states: sulfide (S), sulfoxide (SO) and sulfone (SO₂) give access to variable emission colors from green to deep-blue. Spectroscopic, electrochemical and computational studies show that mixed character excited states have energies which are significantly influenced by the oxidation state of sulfur and the presence of substituents. The sulfide and sulfoxide complexes are non-emissive in the solution state, while the sulfone complexes display ³

SUBMITTER: Tong KM 

PROVIDER: S-EPMC11886617 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature