Deep-blue phosphorescence from platinum(ii) bis(acetylide) complexes with sulfur-bridged dipyridyl ligands DOI Creative Commons
Ka-Ming Tong, Jéssica Toigo, Michael O. Wolf

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

New approaches to prepare rarer emitters such as those that are deep-blue needed advance OLED technologies. Here, we demonstrate a series of new platinum(ii) bis(acetylide) complexes [Pt(N-N)(C[triple bond, length 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 variable emission colors from green deep-blue. Spectroscopic, electrochemical computational studies show mixed character excited states have energies which significantly influenced by the state presence substituents. The non-emissive in solution state, while display 3MLCT/3LLCT excited-state yellow phosphorescence. In PMMA films intense phosphorescence for complexes, photoluminescence quantum yields ranging 0.35-0.91. Here capability changing photophysical properties these metal varying achieve emitters.

Language: Английский

Enhanced blue phosphorescence in platinum acetylide complexes via a secondary heavy metal and anion-controlled aggregation DOI Creative Commons
Vinh Q. Dang, Chenggang Jiang, Thomas S. Teets

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Pyridyl-substituted platinum acetylide complexes bind coinage metal cations, strongly influencing photoluminescence properties. Large counterions maintain the blue phosphorescence profile with large increases in radiative rate and quantum yield.

Language: Английский

Citations

1
Deep-blue phosphorescence from platinum(ii) bis(acetylide) complexes with sulfur-bridged dipyridyl ligands DOI Creative Commons
Ka-Ming Tong, Jéssica Toigo, Michael O. Wolf

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

New approaches to prepare rarer emitters such as those that are deep-blue needed advance OLED technologies. Here, we demonstrate a series of new platinum(ii) bis(acetylide) complexes [Pt(N-N)(C[triple bond, length 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 variable emission colors from green deep-blue. Spectroscopic, electrochemical computational studies show mixed character excited states have energies which significantly influenced by the state presence substituents. The non-emissive in solution state, while display 3MLCT/3LLCT excited-state yellow phosphorescence. In PMMA films intense phosphorescence for complexes, photoluminescence quantum yields ranging 0.35-0.91. Here capability changing photophysical properties these metal varying achieve emitters.

Language: Английский

Citations

0