Abstract Although MOFs and HOF based on X-shaped tetracarboxylic acid with tetrathiafulvalene (H4L) have been synthesized, the acid-base system of the ligand H4L has not reported. In this research, hydrogen-bonded organic frameworks based on H4L with difference bipyridine base (bipy and bipy-ete) were constructed. The deprotonated forms of H4L could act as hydrogen-bond donors or acceptors depending on the deprotonated carboxyl groups. One salt [H2L]2−[bipy-H2]2+H2O [bipy = 4,4′-bipyridine] 1 and one co-crystal [H4L][bipy-ete] [bipy-ete = trans-1,2-bis(4-pyridyl)ethane], 2, have been synthesized and full characterization. Compound 1 and 2 showed excellent and reproducible photocurrent response. The current response of 2 was larger than that of 1. These results open a new method to design HOFs materials based on TTF, which could act as a potential material to be used in the electro-optic field.

中文翻译：

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基于TTF-四苯甲酸和联吡啶碱的氢键定向纯有机骨架

摘要 尽管已经合成了基于 X 型四羧酸和四硫富瓦烯 (H4L) 的 MOF 和 HOF，但尚未报道配体 H4L 的酸碱体系。本研究构建了基于H4L的具有不同联吡啶碱基（bipy和bipy-ete）的氢键有机骨架。H4L 的去质子化形式可以作为氢键供体或受体，这取决于去质子化的羧基。一种盐 [H2L]2-[bipy-H2]2+H2O [bipy = 4,4'-bipyridine] 1 和一种共晶 [H4L][bipy-ete] [bipy-ete = trans-1,2-双(4-吡啶基)乙烷], 2, 已经合成并充分表征。化合物 1 和 2 显示出优异且可重现的光电流响应。2 的电流响应大于 1。这些结果开辟了一种基于 TTF 设计 HOFs 材料的新方法，