Patent attributes
A formulation comprising at least one solvent and at least two different functional compounds of formula (I)AB]k (I)whereinA is a functional structural element, the structural element serving as host material, as a unit that has hole-injection and/or hole-transport properties, as a unit t at has electron-injection and/or electron-transport properties, as a unit which has light-emitting properties, or as a unit which improves the transfer from the singlet state to the triplet state of light-emitting compounds;B is a solubility-promoting structural element; andk is an integer in the range from 1 to 20;the molecular weight of the functional compound is at least 550 g/mol, and the solubility-promoting structural element B conforms to the general formula (L-I)
