Suppressing photooxidation of conjugated polymers and their blends with fullerenes through nickel chelates

This work introduces nickel(ii) dibutyldithiocarbamate as a broadband and universal antioxidant for conjugated polymer semiconductors.

Synthese dreizähniger Liganden durch Spaltung von 3,5-Diphenyl-1,2-dithioliumsalzen mit (Thio)benzoylhydrazin oder 2-Hydroxy-5-methyl-anilin. Strukturen der gebildeten Nickelchelate / Synthesis of Tridentate Ligands by Cleavage of 3.5-Diphenyl-1.2-dithiolium Salts with (Thio)benzoylhydrazine or 2-Hydroxy-5-methyl-aniline. Structures of the Corresponding Nickel Chelates

Tridentate ligands having the donor set S⌒ N⌒ O(S ) were synthesized by cleavage of 3.5-diphenyl-1.2-dithiolium salts with (thio)benzoylhydrazine or 2-hydroxy-5-methyl-aniline. The ligands were characterized as their nickel chelates formed in the presence of triphenylphosphane. The same nickel compounds result by template reactions of dithiolium salt, nickel acetate and the corresponding amine component. Crystal structures were determined for thiodibenzoylmethane benzoylhydrazone 1a, [thiodibenzoylmethane benzoylhydrazonato(2-)]-triphenylphosphane-nickel(II) 1b, [thiodibenzoylmethane thiobenzoylhydrazonato(2-)]-triphenylphosphane-nickel(II) 2b and [thiodibenzoylm ethane 2- hydroxy-5-methyl-anilato(2-)] triphenylphosphane-nickel(II)ethanol 3.