| abstract |
The invention relates to formulations containing at least one hyperbranched polymer, which comprises from 30 to 70 mol% of at least one hole-transport repeat unit A, from 5 to 30 mol% of at least one branching repeat unit B, from 5 to 30 mol% of at least one further repeat unit C and from 5 to 40 mol% of at least one end group E, the repeat units A, B and C being different from one another, and at least one organic solvent, characterised in that the formulation has a viscosity of ≤25 mPas. The invention further relates to the corresponding hyperbranched polymers and to methods for the production thereof. Furthermore, the present invention also relates to the use of the hyperbranched polymers according to the invention in electronic or optoelectronic devices, and to electronic or opto-electronic devices containing these polymers. |