Sumitomo Chemical Company, Limited

Cambridge Display Technology Limited

Torsten Bünnagel

Martin Humphries

Jonathan Nigel Pillow

Martina Pintani

Christian Nielsen

A polymer comprising units &#x3b1;, &#x3b2;, &#x3b3; and &#x3b4; wherein: unit &#x3b1; is present at 30 mole % to 60 mole % and is an optionally substituted arylene; unit &#x3b2; is present at 1 mole % to 30 mole % and is a unit comprising an optionally substituted fluorene; unit &#x3b3; is present at 1 mole % to 40 mole % and comprises aryl substituted nitrogen, or an optionally substituted triazine; unit &#x3b4; is present at 0.5 mole % to 15 mole % and comprises an iridium complex; and optionally up to 20 mole % of other units if the total of &#x3b1;, &#x3b2;, &#x3b3; and &#x3b4; is less than 100 mole %.

Light emitting polymers and devices

Composition having an organic semiconducting material and a triplet-accepting material of formula (I) with a triplet energy level lower than the triplet energy level of the organic semiconducting material, in which each Ar is optionally substituted aryl or heteroaryl group, n is 1-3, m is 1-5, q is 0 or 1, each Ris H or a substituent, and each Ris H or a substituent. Where Ris not H, Rand (Ar)bound to the same carbon atom may be linked by a direct bond or a divalent group. Where n or m is at least 2, adjacent Ar groups may be linked by a divalent group. Where q=0, Ris not H and is linked to (Ar)by a direct bond or a divalent group. 

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Godmanchester, United Kingdom

Torsten Bünnagel