A series of molecular spheroids (SP1–SP4) was synthesized using pseudolinear bisimidazole and bisbenzimidazole donors in combination with Pd(NO₃)₂ acceptor via coordination-driven self-assembly. They were characterized by NMR and mass spectrometry, and the solid-state structures of SP1 and SP3 were confirmed by X-ray diffraction. Crystal packing revealed the presence of molecular channels with water molecules in the channels as proton source. All the systems showed proton conductivity across a wide range of temperature and relative humidity. Furthermore, the mode of proton conduction in these molecular spheroids was explored by performing a control experiment using 2,4-dinitrophenol molecule, which indicates that the proton conductivity in the present case increases with increasing surface area of these molecular spheroids.

中文翻译：

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自组装Pd ^II ₆分子球体及其质子传导性能

通过配位驱动的自组装，使用假线性联苯咪唑和双苯并咪唑供体与Pd（NO ₃）₂受体结合，合成了一系列分子球体（SP1 - SP4）。通过NMR和质谱对它们进行了表征，以及SP1和SP3的固态结构通过X射线衍射确认。晶体堆积揭示了分子通道的存在，通道中的水分子作为质子源。所有系统在广泛的温度和相对湿度范围内均显示出质子传导性。此外，通过使用2，4-二硝基苯酚分子进行对照实验，探索了这些分子球体中的质子传导模式，这表明在这种情况下，质子传导率随这些分子球体表面积的增加而增加。