New pyrrolopyridazine derivatives as blue organic luminophors

Three different classes of new pyrrolopyridazines were made as potential blue organic luminophors. Their optical and electrochemical properties were compared. One of the luminophors 2-(4-fluorophenyl)pyrrolo[1,2-b]pyridazine-5,6,7-tricarboxylic acid trimethyl ester (2) showed a relative quantum yield as high as 0.9 and compound 8 in the vinyl bridged pyrrolopyridazine series has been characterized by its X-ray crystal structure analysis.