Merck Patent Gmbh

Miriam Engel

Holger Heil

Beate Burkhart

Nils Koenen

Rouven Linge

Lara-Isabel Rodriguez

Sebastian Meyer

Katja Scheible

Aaron Lackner

Dominik Joosten

Manuel Hamburger

Gaëlle Béalle

Christoph Leonhard

Matthias Hengst

Sebastian Stolz

The invention relates to polymers having at least one repeating unit of the following formula (I): wherein Ar, Ar, Arand Ar, R and X, and a, b, c, d, e and f can have the meanings defined in claim, to processes for the preparation thereof and to the use thereof in electronic or optoelectronic devices, in particular in organic electroluminescent devices, so-called OLEDs (OLED═Organic Light Emitting Diodes). The present invention also relates to electronic or optoelectronic devices, in particular organic electroluminescent devices, which contain said polymers.

Polymers with amine-group-containing repeating units

The present invention relates to formulations comprising at least one hyper-branched polymer which contains 30 to 70 mol % of at least one hole-transporting recurring unit A, 5 to 30 mol % of least one branching recurring unit B, 5 to 30 mol % of at least one further recurring unit C and 5 to 40 mol % of least one end group E, where the recurring units A, B and C are different from one another, and at least one organic solvent, characterised in that the formulation has a viscosity of ≤25 mPas. The present invention furthermore relates to the corresponding hyperbranched polymers and to processes for the preparation thereof. The present invention additionally also relates to the use of the hyperbranched polymers according to the invention in electronic or opto-electronic devices, and to electronic or opto-electronic devices containing these polymers.

Formulation containing a highly branched polymer, highly branched polymer and electro-optical device containing this highly branched polymer

The present application relates to a blue light-emitting organic electroluminescent device (OLED) having an anode, a cathode, at least one blue light-emitting layer and at least one hole-transport layer, wherein the at least one blue light-emitting layer comprises an elongated bis-indenofluorene derivative as a main component and wherein the at least one hole-transport layer comprises a polymer with non-conjugated units as a main component as well as to a method for producing the organic electroluminescent device.

Organic electroluminescent device

The present invention relates to compounds of the formula (1) which are suitable for use in electronic devices, in particular organic electroluminescent devices, and to electronic devices which comprise these compounds. 

Materials for organic electroluminescent devices

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Darmstadt, Germany

Miriam Engel