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首页> 外文期刊>Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics >Tunable Luminescence and Application in Dye-Sensitized Solar Cells of Zn(II)/Hg(II) Complexes: Methyl Substitution-Induced Supramolecular Structures Based on (E)-N-(6-Methoxypyridin-2-ylmethylene)arylamine Derivatives
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Tunable Luminescence and Application in Dye-Sensitized Solar Cells of Zn(II)/Hg(II) Complexes: Methyl Substitution-Induced Supramolecular Structures Based on (E)-N-(6-Methoxypyridin-2-ylmethylene)arylamine Derivatives

机译：Zn（II）/ Hg（II）配合物的染料敏化可调光及其在染料敏化太阳能电池中的应用：基于（E）-N-（6-甲氧基吡啶-2-基亚甲基）芳基胺衍生物的甲基取代诱导的超分子结构

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Using Schiff-base ligands (E)-N-(6-methoxypyridin-2-y1)(CH=NAr) (where Ar = C6H5, Li; 2-MeC6H4, L-2; 2,4,6Me(3)C(6)H(2), L-3), six Zn(II)/Hg(II) complexes, namely, [ZnLiC12] (Znl), [HgL1C(12)] (Hgl), [ZnL2C(12)] (Zn2), [HgL2C12] (Hg-2), [ZnL3C12] (Zn-3), and [HgL3C12] (Hg-3) have been synthesized under solvothermal conditions. The structures of six complexes have been established by X-ray single-crystal analysis and further physically characterized by EA, FT-W, NMR, and ESI-MS. The crystal structures of these complexes indicate that noncovalent interactions, such as hydrogen bonds, C-H-C1, and pi(center dot center dot center dot)pi stacking, play essential roles in constructing the resulting supramolecular structures (1D for Hg3; 2D for Zn2, Hg2; 3D for Znl, Hgl, and Zn3). Upon irradiation with UV light, the emission of complexes Znl-Zn3 and Hgl-Hg3 could be finely tuned from green (480-540 nm) in solid state to blue (402-425 nm) in acetonitrile solution. It showed that the ligand and metal cation can influence the structures and luminescence properties of complexes such as emission intensities and maximum wavelengths. Since these ligands and complexes could compensate for the absorption of N719 in the low-wavelength region of the visible spectrum and reduce charge recombination of the injected electron, the ligands L-1-L-3 and complexes Zn3/Hg3 were employed to prepare cosensitized dye-sensitized solar cells devices for investigating the influences of the electron-donating group and coordination on the DSSCs performance. Compared to DSSCs only being sensitized by N719, these prepared ligands and complexes chosen to cosensitize N719 in solar cell do enhanced its performance by 11-41%. In particular, a DSSC using L-3 as cosensitizer displays better photovoltaic performance with a short circuit current density of 18.18 mA cm(-2), corresponding to a conversion efficiency of 7.25%. It is much higher than that for DSSCs only sensitized by N719 (5.14%).
机译：使用席夫碱配体（E）-N-（6-甲氧基吡啶-2-y1）（CH = NAr）（其中Ar = C6H5，Li; 2-MeC6H4，L-2; 2,4,6Me（3）C （6）H（2），L-3），六个Zn（II）/ Hg（II）配合物，即[ZnLiC12]（Znl），[HgL1C（12）]（Hgl），[ZnL2C（12）]在溶剂热条件下合成了（Zn2），[HgL2C12]（Hg-2），[ZnL3C12]（Zn-3）和[HgL3C12]（Hg-3）。通过X射线单晶分析已建立了六种配合物的结构，并通过EA，FT-W，NMR和ESI-MS对其进行了进一步的物理表征。这些配合物的晶体结构表明，非共价相互作用，例如氢键，CH-C1和pi（中心点中心点中心点中心点）pi堆积，在构建最终的超分子结构中起着至关重要的作用（Hg3为1D; Zn2为2D ，Hg2;对于Zn1，Hg1和Zn3为3D）。在紫外光照射下，配合物Zn1-Zn3和Hg1-Hg3的发射可以从固态的绿色（480-540 nm）精细调整为乙腈溶液中的蓝色（402-425 nm）。结果表明，配体和金属阳离子可以影响配合物的结构和发光性能，例如发射强度和最大波长。由于这些配体和配合物可以补偿可见光谱低波长区域中N719的吸收并减少注入的电子的电荷复合，因此采用配体L-1-L-3和配合物Zn3 / Hg3制备共敏化的染料敏化太阳能电池设备，用于研究给电子基团和配位对DSSCs性能的影响。与仅被N719敏化的DSSC相比，这些准备用来在太阳能电池中共敏化N719的配体和配合物的确将其性能提高了11-41％。特别是，使用L-3作为增敏剂的DSSC表现出更好的光伏性能，短路电流密度为18.18 mA cm（-2），对应于7.25％的转换效率。它比仅被N719敏化的DSSC高得多（5.14％）。

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