Platinum Poly-yne Featuring N-Heterocyclic Carbene Ligands: Synthesis, Properties, and Organic Light-Emitting Diode Application
Platinum Poly-yne Featuring N-Heterocyclic Carbene Ligands: Synthesis, Properties, and Organic Light-Emitting Diode Application
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DOI：
10.1021/acs.macromol.1c01344
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发表时间：
2021-10
期刊：
影响因子：
5.5
通讯作者：
Ru He;R. A. Domingues;Silvano R. Valandro;K. Schanze
中科院分区：
文献类型：
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作者：
Ru He;R. A. Domingues;Silvano R. Valandro;K. Schanze
报道了第一个具有N-杂环卡宾配体的铂多炔化合物的合成、表征和有机发光二极管的应用。该化合物是通过铜(I)催化的AA/BB型聚合反应合成的，其Mn=8400gmol-1，Đ=1.6.含手性2-乙基己基取代基的大而强的σ供体配体有助于限制链间相互作用，破坏非发射金属中心的d-d态的稳定性，从而提高铂多炔的光致发光量子产率。利用NPtAP作为发射极，成功制备了溶液处理的OLED原型，并显示出黄绿色的电致发光(EL)。
We report the synthesis, characterization, and organic light-emitting diode (OLED) application of the first example of a platinum poly-yne (NPtAP) featuring N-heterocyclic carbene (NHC) ligands.NPtAPwas synthesized via the Cu(I)-catalyzed AA/BB type polymerization reaction withMn= 8400 g mol–1andĐ= 1.6. The bulky and strong σ-donating NHC ligands bearing chiral 2-ethylhexyl substituents help to limit the interchain interaction and destabilize the nonemissive metal-centered d–d state, resulting in enhancement of the photoluminescence quantum yield of the platinum poly-yne. The prototype solution-processed OLEDs employingNPtAPas the emitter were successfully fabricated and display yellow-green electroluminescence (EL).