New aromatic and heteroaromatic poly-trifluoroborate compound useful in electro-optical applications e.g. organic light emitting devices, organic photoconductors or organic solar cells

摘要

Aromatic and heteroaromatic poly-trifluoroborate compound (I), with the exception of potassium (perfluoro-1,2-phenylene)bis(trifluoroborate), is new. Aromatic and heteroaromatic poly-trifluoroborate compound of formula ((R) x-A-[(B -)-F 3X +] n) (I), with the exception of potassium (perfluoro-1,2-phenylene)bis(trifluoroborate), is new. A : aromatic or heteroaromatic rings or ring systems, with the exception of 3,4,5,6-tetrafluoro-1,2-phenylene, which is optionally substituted with R; x : 0-50, preferably 0-10; R : H, 1-40C, preferably 1-15C alkyl (e.g. methyl, ethyl, propyl, iso-propyl or 2-ethylhexyl), 5-40C, preferably 5-25C aryl (e.g. phenyl, napthyl, anthracenyl or pyrenyl), 1-40C, preferably 1-15C alkoxy (e.g. methoxy, ethoxy, n-propoxy, iso-propoxy or 2-ethyl-hex-1-yl-oxy), halo (preferably F or Cl), CN, NO 2or SO 2R 1; n : 2 or greater, preferably 2-6; and X : alkali metal cation of Li, Na, K, Cs or a complex of organic cation e.g. tetraalkylammonium e.g. tetramethylammonium, tetrabutylammonium or trimethylbenzylammonium or tetraalkylphosphonium e.g. tetrabutylphosphonium, tetraoctylphosphonium, imminium salt e.g. bis(triphenylphosphine)iminium or pyrylium salts e.g. tri-tert-butylpyrylium, preferably alkali metal, preferably potassium, or tetraalkylammonium, preferably tetrabutylammonium), with the exception of 3,4,5,6-tetra-fluoro1,2-bis-trifluoroborate potassium. An independent claim is also included for preparing the poly-trifluoroborate compound (I).