Cambridge Display Technology Limited

Sumitomo Chemical Company, Limited

Cdt Oxford Limited

Brian Tierney

Clare Foden

Mark Leadbeater

Mary Joyce McKiernan

Ilaria Grizzi

Natasha M Conway

Nalinkumar Lallubhai Patel

Daisuke Fukushima

Nalin K Patel

Carl R Towns

Richard O'Dell

Kazuei Ohuchi

Stephen O'Connor

Lorraine Murtagh

Richard O'DELL

Steve O'CONNOR

A polymer comprising a first repeat unit of formula (I), wherein each Ar is independently selected from optionally substituted aryl or heteroaryl and the group of formula (I) is present in a molar ratio of less than or equal to 10%, and, optionally, a second, optionally substituted repeat unit having a single nitrogen atom in its backbone of formula &#x2014;Ar&#x2014;N(Ar)&#x2014;Ar&#x2014; in a molar ratio of no greater than 5%.

Polymers, their preparation and uses

It is an object of the invention to provide a polymer compound that, when used in a light-emitting device, results in excellent luminance life for the obtained light-emitting device. The invention provides a polymer compound comprising a constitutional unit represented by formula (1). [In formula (1), R, R, R, Rrepresent an unsubstituted alkyl group, Rand Rrepresented an unsubstituted or substituted alkyl group, an unsubstituted or substituted alkoxy group, an unsubstituted or substituted aryl group, an unsubstituted or substituted aryloxy group, an unsubstituted or substituted heterocyclic group, an unsubstituted or substituted silyl group, a halogen atom, an alkoxycarbonyl group, a carboxyl or a cyano group, and Rand Rrepresent an unsubstituted or substituted alkyl group, an unsubstituted or substituted alkoxy group or an unsubstituted or substituted aryl group. The letters a, b, c and d each represent an integer of 0 to 3. When multiple R, R, Rand Rgroups are present, they may be the same or different.]

Polymer compound and light-emitting device using same

An organic light-emitting device comprising an anode; a hole transport layer; a light-emitting layer; and a cathode, characterized in that the hole transport layer comprises a polymer having a repeat unit comprising a 9,9 biphenyl fluorene unit wherein the 9-phenyl rings are independently and optionally substituted and the fluorene unit is optionally fused.

Light-emitting device and 9.9 biphenyl fluorene materials therefor

A polymer compound that, when used for fabrication of a light emitting device, results in an excellent luminance lifetime for the obtained light emitting device. A polymer compound comprising a constitutional unit represented by formula (1). (In the formula, Rand Reach independently represent an unsubstituted alkyl group. Rand Reach independently represent a group other than an unsubstituted alkyl group. Rand Reach independently represent an unsubstituted or substituted alkyl, unsubstituted or substituted alkoxy or unsubstituted or substituted aryl group. The letters a and b each independently represent an integer of 0-4. The letters c and d each independently represent an integer of 0-3. When multiple R, R, Rand Rgroups are present, they may be the same or different.)

Polymer compound and light emitting device using the same

A semiconductive conjugated polymer comprising a first repeat unit comprising general formula I: 

Blue-shifted triarylamine polymer

An optical device comprising an anode, a cathode comprising barium, strontium or calcium, and a layer of organic semiconducting material between the anode and the cathode wherein a layer of hole transporting and electron blocking material is located between the anode and the layer of organic semiconducting material.

Electroluminescent device

A polymer for use in an optical device comprising a first, optionally substituted, repeat unit of formula and a second, optionally substituted, repeat unit of formula wherein each Ar and Ar' is the same or different and comprises an optionally substituted aryl or heteroaryl group and optionally a third, optionally substituted, repeat unit in a molar ratio of no greater than 5%, the third repeat unit having a formula &#x2014;Ar&#x2014;N(Ar)&#x2014;Ar&#x2014; and having a single nitrogen atom in its backbone.

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Cambridgeshire, United Kingdom

Brian Tierney