Abstract

Bis(benzotriazol-1-yl)phenylmethane CHPh(btz)₂ and tris(benzotriazol-1-yl)methane CH(btz)₃ were used as N-donor ligands to prepare luminescent heteroleptic copper(I) complexes. [Cu{CHPh(btz)₂}(PPh₃)₂][BF₄] and [Cu{CHPh(btz)₂}(DPEphos)][BF₄] (DPEphos = bis[(2-diphenylphosphino)phenyl] ether) were obtained from the corresponding borohydride complexes [Cu(BH₄)(PPh₃)₂] and [Cu(BH₄)(DPEphos)] and tetrafluoroboric acid. [Cu{CH(btz)₃}(PPh₃)][BF₄] and [Cu{CH(btz)₃}(PⁱPr₃)][BF₄] were prepared from the acetonitrile complex [Cu(NCCH₃)₄][BF₄]. The complexes exhibited bright yellow or orange emissions upon excitation with near-UV and violet light. The photoluminescent properties were attributed to metal-to-ligand charge transfer transitions on the basis of experimental data and DFT calculations.

Graphical abstract

中文翻译：

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具有多齿苯并三唑基配体的发光杂铜（I）配合物

摘要

将双（苯并三唑-1-基）苯基甲烷CHPh（btz）₂和三（苯并三唑-1-基）甲烷CH（btz）₃用作N-供体配体以制备发光的杂配铜（I）配合物。[Cu {CHPh（btz）₂ }（PPh ₃）₂ ] [BF ₄ ]和[Cu {CHPh（btz）₂ }（DPEphos）] [BF ₄ ]（DPEphos =双[（2-二苯基膦基）苯基]醚）由相应的硼氢化物配合物[Cu（BH ₄）（PPh ₃）₂ ]和[Cu（BH ₄）（DPEphos）]和四氟硼酸获得。[Cu {CH（btz）₃ }（PPh ₃）] [BF ₄]和[Cu {CH（btz）₃ }（P ⁱ Pr ₃）] [BF ₄ ]是由乙腈络合物[Cu（NCCH ₃）₄ ] [BF ₄ ]制备的。在用近紫外光和紫光激发时，复合物显示出亮黄色或橙色发射光。根据实验数据和DFT计算，光致发光特性归因于金属到配体的电荷转移跃迁。

图形概要