Di-, tri-, pseudo-di- and pseudo-tetra-acetylenic polymers of platinum: Synthesis, characterization and optical spectra

Harvesting solar energy using conjugated metallopolyyne donors containing electron-rich phenothiazine–oligothiophene moieties

“…It is worth noting that the purification steps become more tedious in the ligand synthesis as the number of thienyl rings m increases. The Pt alkynyl compounds were prepared by the Sonogashira-type dehydrohalogenation between each of the diethynyl precursors and suitable platinum chloro precursors [23][24][25][26][27][28][29][30][31][32][33][34][35][36][81][82][83][84][85][86][87][88][89][90]. The feed mole ratio of the platinum precursors and the diethynyl ligands were 1:1 and 2:1 for the polymer and dimer syntheses, respectively, and each product was carefully purified to remove ionic impurities and catalyst residues.…”

Nitrile ligands for controlled synthesis of alkynyl-ruthenium based homo and hetero bimetallic systems

“…Conversely, 1,4-diethynylbezene is a well established pconjugated spacer [1,26,[54][55][56][57][58]. Thus, the bimetallic system 8 shows two successive reversible oxidation waves (E = 205 (i p,a /i p,c = 1.06) and 495 mV versus FeCp 2 (i p,a / i p,c = 1.03)) related to the formation of the Ru III -Ru II and Ru III -Ru III systems (Fig.…”

Efficient Deep Blue Platinum Acetylide Phosphors with Acyclic Diaminocarbene Ligands

“…[9][10][11][12][13][14][15] Four-coordinate Pt II acetylide complexes with the generalf ormula PtL 2 (CCR) 2 ,w here "L 2 " represents either two neutralm onodentate ligandsoro ne chelating neutrall igand, are known to exhibit rich triplet-state photophysics. [10,[16][17][18][19][20] Phosphine or diimine auxiliary ligands( L 2 ) are among the most popular in Pt acetylide-derivedc hromophores. [21][22][23][24] The diimine analogues typically have good emission properties, that is, high quantum yields, short lifetimes, and facile color tunability,b ut the diimine-localized LUMO and the MLCT nature of the excited state limit photoluminescence to longere mission wavelengths.…”