The present invention provides a class of iridium (III) based phosphors bearing both pincer carbene and pyrazolyl chelates. Differing from the conventional cyclometalated Ir(III) metal complexes, these novel phosphorescent Ir(III) metal complexes are synthesized from a class of pincer carbene chelate, a class of pyrazolyl-based chelate and an iridium metal source complex. Because the phosphorescent Ir(III) metal complex proposed by the present invention includes multiple strong bonding interactions (Ir—C bond), the non-radiative decay from the higher lying triplet excited state can be effectively suppressed. Thus, this novel phosphorescent Ir(III) metal complex is able to emit a range of visible light (particularly the blue light) with high color purity and high efficiency as neat sample. Moreover, this novel phosphorescent Ir(III) metal complex is also adapted as the guest emitter in the light emitting layer (EML) for the traditional doped OLED architecture.
                            本发明提供一类含有钳式卡宾和
吡唑基螯合的
铱(III)基
发光材料。与传统的环
金属化
铱(III)
金属配合物不同,这些新颖的
磷光
铱(III)
金属配合物是由一类钳式卡宾螯合、一类基于
吡唑基的螯合以及一个
铱金属源配合物合成的。因为本发明提出的
磷光
铱(III)
金属配合物包括多个强键合作用(
铱-碳键),可以从更高能的三重激发态有效抑制非辐射衰减。因此,这种新颖的
磷光
铱(III)
金属配合物能够以高色纯度和高效率作为纯净样品发射一系列可见光(特别是蓝光)。此外,这种新颖的
磷光
铱(III)
金属配合物也适用于作为传统掺杂OLED结构中发光层(
EML)的客体发射器。