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Description:

For decades, the study of coordination polymers (CPs) and metal–organic frameworks (MOFs) has been limited primarily to their behavior as crystalline solids. In recent years, there has been increasing evidence that they can undergo reversible crystal-to-liquid transitions. However, their "liquid" states have primarily been considered intermediate states, and their diverse properties and applications of the liquid itself have been overlooked. As we learn from organic polymers, ceramics, and metals, understanding the structures and properties of liquid states is essential for exploring new properties and functions that are not achievable in their crystalline state. This review presents state-of-the-art research on the liquid states of CPs and MOFs while discussing the fundamental concepts involved in controlling them. We consider the different types of crystal-to-liquid transitions found in CPs and MOFs while extending the interpretation toward other functional metal–organic liquids, such as metal-containing ionic liquids and porous liquids, and try to suggest the unique features of CP/MOF liquids. We highlight their potential applications and present an outlook for future opportunities.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: metal-organic frameworks, coordination polymers, liquids, glasses, phase transition

Date published: 2024-05-08

Publisher: Royal Society of Chemistry (RSC)

Journal:

• Chemical Science (ISSN: 20416520) vol. 15 issue. 20 p. 7474-7501

Funding:

• Ministry of Education, Culture, Sports, Science and Technology JP22H05147
• Fonds Wetenschappelijk Onderzoek 1280924N
• Japan Society for the Promotion of Science JP21H01950
• Japan Society for the Promotion of Science JP19K22200

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1039/d4sc01793e

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Updated at: 2024-10-10 08:30:26 +0900

Published on MDR: 2024-10-10 08:30:26 +0900