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A New Dimension for Coordination Polymers and Metal–Organic Frameworks: Towards Functional Glasses and Liquids
Author(s) -
Horike Satoshi,
Nagarkar Sanjog S.,
Ogawa Tomohiro,
Kitagawa Susumu
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201911384
Subject(s) - ionic liquid , materials science , porosity , polymer , state of matter , chemical physics , ion , ionic bonding , ionic conductivity , synchrotron , nanotechnology , metal , liquid crystal , chemistry , composite material , organic chemistry , metallurgy , condensed matter physics , optoelectronics , optics , physics , catalysis , electrode , electrolyte
There are two categories of coordination polymers (CPs): inorganic CPs (i‐CPs) and organic ligand bridged CPs (o‐CPs). Based on the successful crystal engineering of CPs, we here propose noncrystalline states and functionalities as a new research direction for CPs. Control over the liquid or glassy states in materials is essential to obtain specific properties and functions. Several studies suggest the feasibility of obtaining liquid/glassy states in o‐CPs by design principles. The combination of metal ions and organic bridging ligands, together with the liquid/glass phase transformation, offer the possibility to transform o‐CPs into ionic liquids and other ionic soft materials. Synchrotron measurements and computational approaches contribute to elucidating the structures and dynamics of the liquid/glassy states of o‐CPs. This offers the opportunity to tune the porosity, conductivity, transparency, and other material properties. The unique energy landscape of liquid/glass o‐CPs offers opportunities for properties and functions that are complementary to those of the crystalline state.