A novel zinc porphyrin ZnP bearing a 1,3,5-triazine-2,4-diamine unit has been designed and synthesized in good yields to construct axial-coordinated assemblies (denoted as ZnP–Ai, i = 1, 2, 3 and 4) with different isonicotinic acid analogues (assigned as A1, A2, A3 and A4) through zinc-to-ligand axial coordination approach. Then these assemblies were grafted onto TiO₂ electrode surface to build dye sensitized solar cells. The performance of these cells also was examined. Photoelectrochemical measurements illustrate that all the assembly based cells have certain capabilities to export photocurrent. Especially, the ZnP–A2 assembly with a cyanoacrylic acid group based solar cell has the highest conversion efficiency of 0.81% with a J_SC of 3.0mA/cm², a V_OC of 0.38V, and a FF of 0.71 among these assembly based solar cells. Additionally, the UV–vis absorption, fluorescence spectra, density functional theory (DFT) calculations, transmission electron microscopy (TEM) and electrochemical impedance spectra (EIS) were performed to determine the photoelectric behavior as well as morphological structure on the TiO₂ surface modified by these assemblies.

中文翻译：

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由异烟酸类似物通过吡啶基单元与卟啉锌轴向配位形成的自组装体：在染料敏化太阳能电池中的合成与应用

已经设计并合成了具有1,3,5-三嗪-2,4-二胺单元的新型锌卟啉ZnP，并以高收率合成了轴向配位的组装体（表示为ZnP–Ai，i = 1、2、3和4）通过锌-配体轴向配位方法使用不同的异烟酸类似物（分别为A1，A2，A3和A4）。然后将这些组件接枝到TiO ₂电极表面上，以构建染料敏化太阳能电池。还检查了这些电池的性能。光电化学测量表明，所有基于组件的电池都具有一定的输出光电流的能力。尤其是，基于氰基丙烯酸基团的太阳能电池ZnP–A2组件的最高转换效率为0.81％，J _SC为3.0mA / cm ²，V在这些基于组件的太阳能电池中，_OC为0.38V，FF为0.71。此外，还进行了紫外可见吸收，荧光光谱，密度泛函理论（DFT）计算，透射电子显微镜（TEM）和电化学阻抗谱（EIS）的测定，以确定改性后的TiO ₂表面的光电性能和形态结构。通过这些程序集。