Disappeared supramolecular isomer reappears with perylene guest

Among different types of polymorphism, disappearing polymorphism deals with the metastable kinetic form which can not be reproduced after its first isolation. In the world of coordination polymers (CPs) and metal-organic frameworks (MOFs), despite the fact that many types of supramolecular isomerism...

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Bibliographic Details
Published in:IUCrJ 2020-03, Vol.7 (Pt 2), p.324-330
Main Authors: Park, In-Hyeok, Dey, Atanu, Sasaki, Kenta, Ohba, Masaaki, Lee, Shim Sung, Vittal, Jagadese J
Format: Article
Language:English
Subjects:
Coordination polymers
crystal engineering
disappearing polymorphism
Isomers
Metal-organic frameworks
mofs
Photoluminescence
Polymorphism
Research Papers
supramolecular isomerism
supramolecular isomers
Topology
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Summary:Among different types of polymorphism, disappearing polymorphism deals with the metastable kinetic form which can not be reproduced after its first isolation. In the world of coordination polymers (CPs) and metal-organic frameworks (MOFs), despite the fact that many types of supramolecular isomerism exist, we are unaware of disappearing supramolecular isomerism akin to disappearing polymorphism. This work reports a MOF with topology that could not be reproduced, but subsequent synthesis yielded another supramolecular isomer, a double-pillared-layer MOF. When perylene was added in the same reaction, the disappeared MOF reappeared with perylene as a guest in the channels. Interestingly, the photoluminescence of the MOF with a perylene guest is dominated by the emission of the guest molecule. The influence of guest molecules on the stabilization of the supramolecular isomers of a MOF opens up a strategy to access MOFs with different structures.
ISSN:2052-2525
2052-2525
DOI:10.1107/S2052252520001451