Nissan Chemical Industries Limited

Solvay USA Inc.

Plextronics, Inc.

Nissan Chemical Corporation

Christopher R Knittel

Christopher T Brown

Jing Wang

Brian Edward Woodworth

Venkataramanan Seshadri

Mathew Mathai

Neetu Chopra

Victor Miranda

Amanda Gavin

A composition comprising: at least one compound comprising a hole transporting core, wherein the core is covalently bonded to a first arylamine group and also covalently bonded to a second arylamine group different from the first, and wherein the compound is covalently bonded to at least one intractability group, wherein the intractability group is covalently bonded to the hole transporting core, the first arylamine group, the second arylamine group, or a combination thereof, and wherein the compound has a molecular weight of about 5,000 g/mole or less. Blended mixtures of arylamine compounds, including fluorene core compounds, can provide good film formation and stability when coated onto hole injection layers. Solution processing of OLEDs is a particularly important application.

Hole transport compositions and related devices and methods (I)

The composition described here comprises at least one hole-transporting compound, wherein the hole-transporting compound comprises a core covalently bonded to at least two arylamine groups, wherein the arylamine group optionally comprises one or more intractability groups. The composition can provide good film formation and stability when coated onto hole injection layers. Solution processing of hole transporting layers of OLEDs can be achieved with the composition described here. Good mobility can be achieved.

Hole transport materials including OLED applications

Hole transport compositions and related devices and methods (II)

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Christopher R Knittel