Sumitomo Chemical Company, Limited

Cambridge Display Technology Limited

Christian Nielsen

Jonathan Nigel Pillow

Fredrik Jakobsson

Thomas Pounds

Martina Pintani

Natasha M J Conway

Torsten Bünnagel

Francesco Distasio

Edward Snedden

Light-emitting composition and devices including the same, the composition including a fluorescent light-emitting material and a polymer having a conjugating repeat unit and a non-conjugating repeat unit in a backbone of the polymer, and in which the conjugating repeat unit provides at least one conjugation path between repeat units linked to it; the non-conjugating repeat unit reduces conjugation of the polymer as compared to a polymer in which the non-conjugating repeat unit is absent; and a triplet excited state energy level of the light-emitting material is higher than a triplet excited state energy level of the non-conjugating repeat unit.

Polymer and organic light-emitting device

A light-emitting composition comprising a mixture of a fluorescent light-emitting material a triplet-accepting copolymer comprising a triplet-accepting repeat unit and a repeat unit of formula (I): wherein A is a divalent group; Rindependently in each occurrence is a substituent; Rin each occurrence is H or a substituent; and x independently in each occurrence is 0, 1, 2 or 3.

Organic light-emitting composition, device and method

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. 

Organic light-emitting material, device and method

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Christian Nielsen