Metal‐organic frameworks are one of the most active research fields today. Despite the progress in recent years, synthesis of highly porous structures bearing functional groups for specific applications remains a challenge. Here, we describe synthesis of Zr(IV) and Hf(IV)‐based tetrazine containing metal‐organic frameworks, ZrTz‐68 and HfTz‐68 with pore size of 2.1 nm, specific surface area up to 4217 m² g^–1, and a UiO‐68 topology. The synthesis can be done on a multi‐gram scale from inexpensive linker 4,4'‐(1,2,4,5‐tetrazine‐3,6‐diyl)dibenzoic acid (H₂TzDB). Moreover, because of the π‐conjugated tetrazine groups these MOFs can be easily post‐synthetically modified by a “click” reaction maintaining the crystallinity of the framework. Due to the diversity of “clickable” substituents, this strategy represents highly versatile tool for a wide range of applications.

中文翻译：

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基于四恶嗪的金属有机骨架，通过点击反应进行合成后的修饰

金属有机框架是当今最活跃的研究领域之一。尽管近年来取得了进步，但具有用于特定应用的官能团的高度多孔结构的合成仍然是一个挑战。在这里，我们描述了基于Zr（IV）和Hf（IV）的四嗪含金属有机骨架ZrTz-68和HfTz-68的合成，其孔径为2.1 nm，比表面积最大为4217 m ²  g ^–1，和UiO-68拓扑。可以用便宜的连接基4,4'-（1,2,4,5-四嗪-3,6-二基）二苯甲酸（H ₂）在几克规模上进行合成TzDB）。此外，由于存在π共轭四嗪基团，这些MOF可以通过“点击”反应轻松地合成后修饰，从而保持骨架的结晶度。由于“可点击”取代基的多样性，该策略代表了适用于广泛应用的高度通用的工具。