Merck Patent Gmbh

Merck Kgaa

Christoph Leonhard

Hsin-Rong Tseng

Gaëlle Béalle

Manuel Hamburger

Anja Jatsch

Irina Martynova

Aurélie Ludemann

Edgar Kluge

Li Wei Tan

Holger Heil

Junyou Pan

Philip Edward May

Pawel Miskiewicz

Beate Burkhart

Daniel Walker

Margarita Wucherer-Plietker

Katja Scheible

Dietmar Kunkel

Miriam Engel

Gaelle Béalle

Matthias Hengst

Katja Maria Scheible

Gaëlle Bealle

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 invention relates to formulations for the preparation of organic electronic devices (OLEDs) which comprise (A) at least one specific ester solvent containing an aromatic group and (B) at least one organic functional material selected from organic conductors, organic semiconductors, organic fluorescent compounds, organic phosphorescent compounds, organic light-absorbent compounds, organic light-sensitive compounds, organic photosensitisation agents and other organic photoactive compounds, selected from organometallic complexes of transition metals, rare earth metals, lanthanides and actinides.

Esters containing aromatic groups as solvents for organic electronic formulations

The present invention relates to a formulation containing at least one organic functional material and at least three different organic solvents, selected from at least two different organic solvents A and at least one organic solvent B, wherein at least one organic solvent A has a boiling point in the range from 250 to 350&#xb0; C. and a viscosity of &#x2265;15 mPas, the at least one organic solvent B has a boiling point in the range from 200 to 350&#xb0; C. and a viscosity of &#x2264;10 mPas, and the solubility of the at least one organic functional material in the second organic solvent B is &#x2265;5 g/l; as well as to electroluminescent devices prepared by using these formulations.

Formulation of an organic functional material

The present invention relates to a formulation containing at least one organic functional material and at least four different organic solvents, a first organic solvent A, a second organic solvent B, a third organic solvent C, and a fourth organic solvent D, wherein the first organic solvent A comprises a group, which is capable of receiving or giving a hydrogen bonding, the second organic solvent B has a boiling point in the range from 50 to 350&#xb0; C., the third organic solvent C has a boiling point in the range from 100 to 300&#xb0; C., and the fourth organic solvent D has a boiling point in the range from 200 to 400&#xb0; C., is present in an amount from 0.01 to 1 vol.-% and has a viscosity of &#x2265;15 mPas, the solubility of the at least one organic functional material in the second organic solvent B and in the fourth organic solvent D is &#x2265;5 g/l, the boiling point of the third organic solvent C is at least 10&#xb0; C. lower than the boiling point of the second organic solvent B; and the boiling point of the fourth organic solvent D is at least 10&#xb0; C. higher than the boiling point of the second organic solvent B; as well as to electroluminescent devices prepared by using these formulations.

The present invention relates to a formulation containing at least one organic functional material and at least two different solvents, a first organic solvent A and a second organic solvent B, wherein the first organic solvent A comprises a group, which is capable of receiving or giving a hydrogen bonding, and wherein the second organic solvent B has a boiling point in the range from 150 to 350&#xb0; C. and the solubility of the at least one organic functional material in the second organic solvent is &#x2265;5 g/l.

The present invention relates to formulations containing at least one organic functional material and at least a first organic solvent, wherein said first organic solvent is an alkyl benzoate solvent, as well as to electronic devices prepared by using these formulations.

The present invention relates to formulations for the preparation of organic electronic devices which comprise at least one specific ketone solvent containing a non aromatic cycle and at least one organic functional material, preferably selected from organic conductors, organic semiconductors, organic fluorescent compounds, organic phosphorescent compounds, organic light-absorbent compounds, organic light-sensitive compounds, organic photosensitisation agents and other organic photoactive compounds, selected from organometallic complexes of transition metals, rare earths, lanthanides and actinides.

Formulations containing ketones comprising non-aromatic cycles

The present invention relates to a formulation containing at least one organic functional material and at least two different organic solvents, a first organic solvent A and a second organic solvent B, wherein the first organic solvent A has a boiling point in the range from 250 to 350&#xb0; C. and a viscosity of &#x3e;15 mPas, the second organic solvent B has a boiling point in the range from 200 to 350&#xb0; C. and a viscosity of &#x2264;10 mPas, the solubility of the at least one organic functional material in the second organic solvent B is &#x2265;5 g/l, and the boiling point of the first organic solvent A is at least 10&#xb0; C. higher than the boiling point of the second organic solvent B; as well as to electroluminescent devices prepared by using these formulations.

The present invention relates to formulations for the preparation of organic electronic devices which comprise at least one specific A/JV-dialkylaniline and at least one organic functional material selected from organic conductors, organic semiconductors, organic fluorescent compounds, organic phosphorescent compounds, organic light-absorbent compounds, organic light-sensitive compounds, organic photosensitisation agents and other organic photoactive compounds, selected from organometallic complexes of transition metals, rare earths, lanthanides and actinides.

Formulations containing N,N-dialkylaniline solvents

Described herein is a process for the preparation of an electronic device such as an organic electroluminescent device (OLED), wherein two adjacent functional layers having an interface are formed from solution in a kinetically controlled manner. The process is particularly suitable for fast and efficient production of electronic devices by printing or coating processes. The description further relates to an electronic device which is obtainable by said process.

Process for making electronic device

The present invention relates to formulations for the preparation of organic electronic devices (OLEDs) which comprise at least one specific ester solvent containing a non aromatic cycle and at least one organic functional material selected from organic conductors, organic semiconductors, organic fluorescent compounds, organic phosphorescent compounds, organic light-absorbent compounds, organic light-sensitive compounds, organic photosensitisation agents and other organic photoactive compounds, selected from organometallic complexes of transition metals, rare earths, lanthanides and actinides.

Esters containing non-aromatic cycles as solvents for OLED formulations

The present invention relates to a formulation containing at least one organic functional material and at least a first and a second solvent, characterized in that the first solvent is a siloxane.

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Otzberg, Germany

Christoph Leonhard