On‐Surface‐Assembled Single‐Layer Metal‐Organic Frameworks with Extended Conjugation
Jing Liu, Nian Lin
Abstract
Abstract Single‐layer metal‐organic frameworks with extended conjugation (SL‐cMOFs) exhibit electronic bands that lead to high conductivity or non‐trivial quantum phases. Experimental realization of SL‐cMOFs has been demonstrated using on‐surface coordination self‐assembly. The tunability and adaptability of coordination assembly offers rich opportunities for designing and fabricating SL‐cMOFs with various geometric characteristics. In this Review, we discuss the recent experimental advances in on‐surface synthesis of SL‐cMOFs and characterization of their band structures. Special attention has been paid to the MOFs featuring Kagome lattices. Starting from the general principles of their structural design, the SL‐cMOFs recently achieved via on‐surface coordination self‐assembly are subsequently divided into three categories, that is, M 3 L 2 , M 2 L 3 , and M 3 L MOFs ( M for metal and L for ligand), and the corresponding works are overviewed. The current challenges and prospective directions are also discussed.