摘要：

An iridium-based compound of Formula I ** Formula ** in which each X is independently chlorine, bromine, iodine, hydroxy, methoxy, ethoxy, phenoxy, cyanate or diphenylphosphanyl, in which each R1-R12 is independently hydrogen, halide , a cyano or nitro group, amino, substituted amino, alkylamino, substituted alkylamino, arylamino, substituted arylamino, alkylammonium, substituted alkylammonium, carboxy, carboxylate, carboxylic acid ester, carbamoyl, hydroxy, substituted or unsubstituted alkyloxy, substituted or unsubstituted aryloxy substituted, sulfanyl, substituted or unsubstituted alkylsulfonyl, substituted or unsubstituted arylsulfonyl, sulfo, sulfino, sulfeno, sulfonato, sulfinato, sulfenato, sulfamoílo, sulfoxide, phosphono, hydroxyphosphinoyl, hydroxy-alkyl-phosphinoyl, phosphonate, phosphinate or R13, in the R13 is aryl, substituted aryl, alkyl, substituted alkyl, branched alkyl, substituted branched alkyl, arylalkyl, substituted arylalkyl, alkylaryl, alkylaryl substituted, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, amino-alkyl, substituted amino-alkyl, amino-alkoxy, substituted amino-alkoxy, amino-aryl, substituted amino-aryl, amino-aryloxy, substituted amino-aryloxy, in the that in R1-R12 two adjacent R's can form an aromatic ring or a substituted aromatic ring, in which the substituent is selected from hydrogen, alkyl, substituted alkyl, halide, a cyano or nitro group, a hydrophilic group such as amino, substituted amino , alkylamino, substituted alkylamino, alkylammonium, substituted alkylammonium, carboxy, carboxylate, carboxylic acid ester, carbamoyl, hydroxy, substituted or unsubstituted alkyloxy, substituted or unsubstituted aryloxy, sulfanyl, substituted or unsubstituted alkylsulfonyl, substituted or unsubstituted arylsulfonyl, sulfo, sulfino, sulfeno, sulfonato, sulfinato, sulfenato, sulfamoílo, sulfoxide, phosphono, hydroxyphosphinoyl, hydroxyl-alkyl-phosphinoyl, phosphonate, phosphinate or, in e 1 that in R1-R12 two adjacent R's can form an aliphatic ring or a substituted aliphatic ring, in which the substituent is selected from hydrogen, alkyl, substituted alkyl, halide, a cyano or nitro group, a hydrophilic group such as amino, amino substituted, alkylamino, substituted alkylamino, alkylammonium, substituted alkylammonium, carboxy, carboxylate, carboxylic acid ester, carbamoyl, hydroxy, substituted or unsubstituted alkyloxy, substituted or unsubstituted aryloxy, sulfanyl, substituted or unsubstituted alkylsulfonyl, substituted arylsulfonyl , sulfo, sulfino, sulfeno, sulfonato, sulfinato, sulfenato, sulfamoílo, sulfoxide, phosphono, hydroxyphosphinoyl, hydroxylalkylphosphinoyl, phosphonate, phosphinate, in which, if in any of R1-R13 there is a substitution, the substituent in Rl- R13 is each independently selected from a halide, a cyano or nitro group, a hydrophilic group such as an amino, alkylamino, alkylammonium, car Boxi, carboxylate, carboxylic acid ester, carbamoyl, hydroxy, alkyloxy, arylalkyloxy, aryloxy, alkylaryloxy, polyethylene, polypropylene, sulfanyl, alkylsulfonyl, arylsulfonyl, sulfo, sulphino, sulphene, sulphonate, sulphinate, sulphonate, sulfamoyl, hydroxyloxy, sulfoxide , hydroxyl-alkyl phosphinoyl, phosphonate, phosphinate, in which alkyl is a linear or branched alkyl chain with a length of 1-20 carbon atoms or a heteroalkyl chain with the length of 1-20 atoms comprising 1- 4 heteroatoms chosen from O, N, P, and S, in which aryl is a 5, 6 or 7 membered aryl ring system, or a 5, 6 or 7 membered heteroaryl ring system comprising 1-3 heteroatoms chosen from O, S and N, with the proviso that at least one of R1-R12 is sulfo-alkyl, sulfo-aryl, sulfo-alkoxy, sulfo-aryloxy, sulfo, sulfino-alkyl, sulfino-aryl, sulfino-alkoxy , sulfino-aryloxy, sulfino, sulfeno-alkyl, sulfeno-aryl, sulfeno -alkoxy, sulphene-aryloxy, sulphene, sulfamoyl-alkyl, sulfamoyl-aryl, sulfamoyl-alkoxy, sulfamoyl-aryloxy, sulfamoyl, alkanesulfonyl-alkyl, alkanesulfonyl-aryl, alkanesulfonyl, arenesulfonyl-alkyl, or arenesulfonyl-aryl, or areamulfinoyl, sulfoamyl -alkyl, sulfoamino-aryl, sulfoamino-alko

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