Effect of alkyl chain length on the luminescence on-off mechanochromic behavior of solid-state Gold(I) isocyanide complexes
Effect of alkyl chain length on the luminescence on-off mechanochromic behavior of solid-state Gold(I) isocyanide complexes
复制标题
烷基链长度对固态金(I)异氰化物配合物发光开关力致变色行为的影响
DOI：
10.1016/j.dyepig.2017.12.030
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发表时间：
2018-03
影响因子：
4.5
通讯作者：
Liu Sheng Hua
中科院分区：
文献类型：
--
作者：
Dong Yu-Bao;Chen Zhao;Yang Lan;Hu Yu-Xuan;Wang Xiao-Yan;Yin Jun;Liu Sheng Hua
合成了五种不同烷基链的苯乙炔（对烷氧基苯异腈）金（I）配合物[其中R = CH_3（5a），C_2 H_5（5 b），C_4 H_9（5c），C_6 H_（13）（5d），C_（10）H_（21）（5e）]，并用~ 1H NMR，~（13）C NMR和高分辨质谱（HRMS）进行了表征。令人惊讶的是，所制备的这些配合物的粉末表现出不同的发射颜色。利用光致发光光谱、粉末X射线衍射（XRD）分析和单晶XRD分析研究了它们的机械致变色发光特性的多样性。结果表明，它们的晶体结构中存在较弱的分子间相互作用，不同的烷基链对它们的堆积排列和光学行为有明显的影响。5c的发光量子产率在固态下高达49.3%。配合物5a-5e在研磨后均表现出发光猝灭。
Five phenylethyne(p-alkoxyphenyl isocyanide)gold(I) complexes with different alkyl chains (OR) in thepara-position of the phenyl isocyanide have been successfully synthesized [where R = CH3(5a), C2H5(5b), C4H9(5c), C6H13(5d), and C10H21(5e)] and structurally characterized by1H NMR,13C NMR, and HRMS. To our surprise, the as-prepared powders of these complexes exhibited different emission colors. The diversity of their mechanochromic luminescence properties has been investigated with photoluminescence spectroscopy, powder X-ray diffraction (XRD) analysis, and single-crystal XRD analysis. The results indicated the presence of weak intermolecular interactions in their crystal structures, and different alkyl chains had obvious impacts on their stacking arrangements and optical behavior. The luminescence quantum yield of5cwas as high as 49.3% in the solid state. Complexes5a–5eeach showed luminescence quenching after grinding.
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