含雙(三牙配基)的銥金屬錯合物Heteroleptic Ir(III) phosphors with bis-tridentate chelating architecture for high efficiency OLEDs

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

14/660,156

專利證號

US 9,219,237 B1

專利獲證名稱

含雙(三牙配基)的銥金屬錯合物Heteroleptic Ir(III) phosphors with bis-tridentate chelating architecture for high efficiency OLEDs

專利所屬機關 (申請機關)

國立清華大學

獲證日期

2015/12/22

技術說明

本發明提供適用於有機發光二極體之一種新穎磷光材料；不同於習知的銥金屬錯合物，本發明係以一雙卡賓別針型配位基衍生物(pincer carbene)、一吡唑基衍生物配位基、一銥金屬離子為基礎架構，進而合成製得一含雙卡賓暨吡唑配基之銥金屬磷光錯合物。因此，本發明之銥金屬磷光錯合物由於具有強配位鍵(Ir-C鍵結)，故其三重激發態能量損失的現象能夠有效抑制，進而使得所述銥金屬錯合物具有高發光效率以及高色純度(藍光光色)，適合摻雜在有機發光二極體之發光層以作為客體發光材料，或是不須摻雜其他物質、直接做為單一發光材料。 The primary objective of the present invention is to provide a series of iridium (III) based phosphor bearing tridentate pincer carbene and pyrazolyl chelates, They are novel phosphorescent Ir(III) metal complex capable of serving as excellent OLED emitters. This novel phosphorescent Ir(III) metal complex is synthesized from a functionalized pincer carbene chelate, a class of pyrazolyl-based chelate and an iridium (III) metal ion. Since the phosphorescent Ir(III) metal complexes proposed by the present invention possess several strong coordination bonds between ligand and metal atom (both Ir-C and Ir-N bonds), the non-radiative decay originated from the higher lying metal centered dd excited state can be effectively suppressed. Thus, this class of phosphorescent Ir(III) metal complex is capable of giving emission across the whole visible region (from blue to red) with high color purity and high emitting efficiency.

備註

本部(收文號1100063323)同意該校110年10月19日清智財字第1109006858號函申請終止維護專利(清大)

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