Polymer and Organic Light Emitting Device A polymer comprising a repeat unit of formula (I a), (I b) or (Ic): (Formulae (Ia), (Ib), (Ic)) wherein M is a metal; R is a backbone repeat group; n is 1 or 2; Sp is a spacer group; w is 0 or 1; L1 and L2 are mono- or bidentate co-coordinating groups; ---- represents a second metal to ligand bond in the case where L1 or L2 is a bidentate ligand and at least one of L1 and L2 is substituted with group of formula (II) (Formula (II)) wherein m is 0 or 1; each Ar1, Ar2 and Ar3 is aryl or heteroaryl. The polymer may be used as an emissive material in an organic light-emitting device.
                            聚合物和有机发光器件 包含式(I a)、(I b)或(Ic)重复单元的聚合物:式(Ia)、(Ib)、(Ic)) 其中 M 是
金属;R 是骨架重复基团;n 是 1 或 2;Sp 是间隔基团;w 是 0 或 1;L1 和 
L2 是单配位基团或双配位基团;---- 代表在 L1 或 
L2 为双齿配位体且 L1 和 
L2 中至少有一个被式 (II) 基团取代的情况下的第二个
金属与配位键(式 (II)) 其中 m 为 0 或 1;Ar1、Ar2 和 Ar3 各为芳基或杂芳基。该聚合物可用作有机发光器件中的
发光材料。