申请人:Universal Display Corporation
公开号:US09306179B2
公开(公告)日:2016-04-05
A novel emitter compound having the formula Os(L1)(L2)(L3) and a novel method of making such compounds are disclosed. In the formula Os(L1)(L2)(L3), each of L1, L2, and L3 is independently a bidentate ligand. The method includes (a) reacting a precursor of ligand L1 with an osmium precursor to form a first intermediate product that has the ligand L1 coordinated to the osmium, wherein the osmium precursor has the formula OsHx(PR3)y, wherein x is an integer from 2 to 6 and y is an integer from 2 to 5, and R is selected from the group consisting of aryl, alkyl and cycloalkyl; (b) reacting the first intermediate product with a reducing agent to form a Os(II) second intermediate product; (c) reacting the second intermediate product with a coordinating solvent to form a third intermediate product; and (d) reacting a mixture of ligands L2 and L3 with said third intermediate product.
本发明涉及一种具有公式Os(L1)(L2)(L3)的新型发射体化合物及制备该化合物的新方法。在公式Os(L1)(L2)(L3)中,L1,L2和L3中的每一个独立地是一个双齿配体。该方法包括以下步骤:(a)将L1配体的前体与锇前体反应,形成一个第一中间产物,其中配体L1与锇配位,其中锇前体具有公式OsHx(PR3)y,其中x是2到6的整数,y是2到5的整数,R选自苯基,烷基和环烷基;(b)将第一中间产物与还原剂反应,形成Os(II)第二中间产物;(c)将第二中间产物与配位溶剂反应,形成第三中间产物;(d)将L2和L3的混合物与所述第三中间产物反应。