On the Role of Chalcogen Donor Atoms in Diimine-Dichalcogenolate Pt-II SONLO Chromophores: Is It Worth Replacing Sulfur with Selenium?

Anna Pintus , M. Carla Aragoni , Francesco Isaia , Vito Lippolis , Dominique Lorcy (1) , Alexandra M. Z. Slawin , J. Derek Woollins , Massimiliano Arca

1 ISCR - Institut des Sciences Chimiques de Rennes

Two new diimine-diselenolate Pt-II chromophores [Pt(bipy)(Me-dset)] (1) and [Pt(phen)(Me-dset)] (2) (Me-dset(2-) = N-methyl-2-thioxothiazoline-4,5-diselenolate) were synthesized and characterized. The effect of replacing sulfur with selenium was investigated by comparing the UV/Vis spectroscopic and electrochemical properties of 1 and 2 with those of the corresponding sulfur analogues, [Pt(bipy)(Me-dmet)] (3) and [Pt(phen)(Me-dmet)] (4), with a particular focus on their linear and nonlinear optical properties

Keywords: ab-initio; Density functional calculations; Diimine; Diselenolate; diselenolene complexes; dithiolate complexes; dye; excited-state; hydrogen; Nonlinear Optics; optical-properties; platinum(ii) complexes; sensitized solar-cells; Solvatochromism

Domains: Chemical Sciences

Anna Pintus, M. Carla Aragoni, Francesco Isaia, Vito Lippolis, Dominique Lorcy, et al.. On the Role of Chalcogen Donor Atoms in Diimine-Dichalcogenolate Pt-II SONLO Chromophores: Is It Worth Replacing Sulfur with Selenium?. European Journal of Inorganic Chemistry, 2015, 2015 (31), pp.5163--5170. ⟨10.1002/ejic.201500777⟩. ⟨hal-01240656⟩