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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Emission tuning in dinuclear gold complexes with diphosphanes containing alkyne and/or oligophenylene spacers
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Emission tuning in dinuclear gold complexes with diphosphanes containing alkyne and/or oligophenylene spacers

机译:含炔烃和/或低聚亚苯基间隔基的二膦与双核金配合物的发射调谐

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摘要

Reaction of the diphosphanes P~P[PPh _2(C _6H _4)nPPh _2(n = 1-5)and PPh _2C≡ C(C _6H _4)C≡CPPh _2]with[AuX(tht)](X = Cl, C _6F _5)in a 1:2 molar ratio affords dinuclear luminescent complexes of formula[(AuX)2(P~P)]. The photoemissive properties of these complexes are mainly controlled by the presence of the diphosphane ligand, specifically by the phenylene spacers of the diphosphanes. At room temperature fluorescent(IL)processes dominate the emissions, both in solution and in the solid state. Frozen solutions or solids at 77 K display dual emissions or only one emission attributed to ligand to ligand charge transfer(LL′CT)transitions from the auxiliary ligand(L)to phenylene spacers of the diphosphane(L′).
机译:二膦烷P〜P [PPh _2(C _6H _4)nPPh _2(n = 1-5)和PPh_2C≡C(C _6H _4)C≡CPPh_2]与[AuX(tht)]的反应(X = Cl ,摩尔比为1:2的C _6F _5)得到式[(AuX)2(P〜P)]的双核发光配合物。这些配合物的光电发射性能主要由二膦配体的存在控制,特别是由二膦的亚苯基间隔基控制。在室温下,荧光(IL)过程在溶液和固态中均占主导地位。冷冻溶液或固体在77 K时显示双重发射或仅一个发射,这归因于从辅助配体(L)到二膦(L')的亚苯基间隔基的配体到配体的电荷转移(LL'CT)过渡。

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