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首页> 外文期刊>Chemistry: A European journal >Benzofuran Trimers for Organic Electroluminescence
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Benzofuran Trimers for Organic Electroluminescence

机译：苯并呋喃三聚体用于有机电致发光

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摘要

Four linear benzofuran trimers have been prepared by a two-stage synthetic procedure.They were tested as materials for organic electroluminescence (OEL).Precursor phenylene ethynylene oligomers were formed in the first stage,then after removal of the phenolic hydroxyl protecting groups,a base was used to promote the cyclization of ortho-hydroxy phenylene ethynylenes to benzofurans.Both acetate esters and tert-butyl carbonates were employed as protecting groups.tert-Butyl and n-hexyl substituents on the benzofurans were used to modulate solubility,aggregation,and film-forming properties;two tert-butyl groups prevented aggregation in the solid state,thus maintaining emission in the blue region of the visible spectrum.The OEL characteristics of the tert-butyl-substituted benzofuran trimer were explored,and blue emission was observed.The two-stage synthetic procedure employed for the preparation of these benzofuran trimers may be applied to a wide variety of benzofuran oligomer and polymer targets.
机译：通过两步合成程序制备了四种线性苯并呋喃三聚体，并作为有机电致发光（OEL）的材料进行了测试。在第一阶段先形成亚苯基亚乙炔低聚物，然后除去酚羟基保护基，碱乙酸酯和碳酸叔丁酯均用作保护基，苯并呋喃上的叔丁基和正己基取代基用于调节溶解度，聚集和薄膜形成特性;两个叔丁基防止固态聚集，从而在可见光谱的蓝色区域保持发射。探索了叔丁基取代的苯并呋喃三聚体的OEL特性，并观察到蓝色发射。用于制备这些苯并呋喃三聚体的两步合成方法可应用于多种苯并呋喃低聚物和聚合物目标。

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