Hydrogen‐bonded organic frameworks (HOFs) are a type of crystalline porous materials self‐assembled from organic or metal–organic building blocks via intermolecular hydrogen bonding, which have received increasing attention due to their reversible and flexible hydrogen bonding properties. Currently, it remains a challenge to construct HOFs based on complex or porous organic cages as molecular building blocks. Herein, a 3D HOF (PgC‐HOF) featuring honeycomb‐shaped channels is crafted utilizing a sizable waterwheel‐like PgC‐noria organic molecule cage. The pivotal role of intermolecular multipoint hydrogen bonding interactions in upholding structural integrity and stability is underscored by the possession of 36 phenolic hydroxyl groups in PgC‐HOF. Interestingly, the introduction of calcium ions into the reaction system results in the formation of the metal–organic framework (PgC‐MOF), with the channel dimensions increasing from 6.8 to 9.1 Å. Furthermore, I2 sorption/release experiments are conducted on PgC‐HOF and PgC‐MOF, achieving an increase in the optimal adsorption amount from 1.45 to 2.19 g g−1 and a transition from an irreversible adsorbent to a reversible adsorbent.

中文翻译：

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水车 PgC-Noria 分子的氢键有机框架和金属-有机框架组装：调节微观结构实现碘转移


氢键有机框架 （HOF） 是一种由有机或金属-有机构建单元通过分子间氢键自组装的结晶多孔材料，由于其可逆和灵活的氢键特性而受到越来越多的关注。目前，基于复杂或多孔有机笼作为分子构建单元构建 HOF 仍然是一个挑战。在此，利用相当大的水车状 PgC-noria 有机分子笼制作了具有蜂窝状通道的 3D HOF （PgC-HOF）。PgC-Hof 中含有 36 个酚羟基，强调了分子间多点氢键相互作用在维护结构完整性和稳定性方面的关键作用。有趣的是，将钙离子引入反应系统导致金属有机框架 （PgC-MOF） 的形成，通道尺寸从 6.8 Å 增加到 9.1 Å。此外，在 PgC-HOF 和 PgC-MOF 上进行了 I2 吸附/释放实验，实现了最佳吸附量从 1.45 到 2.19 g g-1 的增加，并从不可逆吸附剂转变为可逆吸附剂。