Pore topology analysis in porous molecular systems

Porous molecular materials are constructed from molecules that assemble in the solid-state such that there are cavities or an interconnected pore network. It is challenging to control the assembly of these systems, as the interactions between the molecules are generally weak, and subtle changes in t...

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Main Authors: Verity Anipa, Andrew Tarzia, Kim E. Jelfs, Eugeny V. Alexandrov, Matthew A. Addicoat
Format: Article
Language:English
Published: The Royal Society 2023-02-01
Series:Royal Society Open Science
Subjects:
Online Access:https://royalsocietypublishing.org/doi/10.1098/rsos.220813
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author Verity Anipa
Andrew Tarzia
Kim E. Jelfs
Eugeny V. Alexandrov
Matthew A. Addicoat
author_facet Verity Anipa
Andrew Tarzia
Kim E. Jelfs
Eugeny V. Alexandrov
Matthew A. Addicoat
author_sort Verity Anipa
collection DOAJ
description Porous molecular materials are constructed from molecules that assemble in the solid-state such that there are cavities or an interconnected pore network. It is challenging to control the assembly of these systems, as the interactions between the molecules are generally weak, and subtle changes in the molecular structure can lead to vastly different intermolecular interactions and subsequently different crystal packing arrangements. Similarly, the use of different solvents for crystallization, or the introduction of solvent vapour, can result in different polymorphs and pore networks being formed. It is difficult to uniquely describe the pore networks formed, and thus we analyse 1033 crystal structures of porous molecular systems to determine the underlying topology of their void spaces and potential guest diffusion networks. Material-agnostic topology definitions are applied. We use the underlying topological nets to examine whether it is possible to apply isoreticular design principles to porous molecular materials. Overall, our automatic analysis of a large dataset gives a general insight into the relationships between molecular topologies and the topological nets of their pore network. We show that while porous molecular systems tend to pack similarly to non-porous molecules, the topologies of their pore distributions resemble those of more prominent porous materials, such as metal–organic frameworks and covalent organic frameworks.
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spelling doaj.art-0dbee91e406b4106bc2cc02e4e614d8e2023-03-28T08:50:59ZengThe Royal SocietyRoyal Society Open Science2054-57032023-02-0110210.1098/rsos.220813Pore topology analysis in porous molecular systemsVerity Anipa0Andrew Tarzia1Kim E. Jelfs2Eugeny V. Alexandrov3Matthew A. Addicoat4School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UKDepartment of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, UKDepartment of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, UKSamara Center for Theoretical Materials Science (SCTMS), Samara University, Ac. Pavlov Street 1, Samara 443011, RussiaSchool of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UKPorous molecular materials are constructed from molecules that assemble in the solid-state such that there are cavities or an interconnected pore network. It is challenging to control the assembly of these systems, as the interactions between the molecules are generally weak, and subtle changes in the molecular structure can lead to vastly different intermolecular interactions and subsequently different crystal packing arrangements. Similarly, the use of different solvents for crystallization, or the introduction of solvent vapour, can result in different polymorphs and pore networks being formed. It is difficult to uniquely describe the pore networks formed, and thus we analyse 1033 crystal structures of porous molecular systems to determine the underlying topology of their void spaces and potential guest diffusion networks. Material-agnostic topology definitions are applied. We use the underlying topological nets to examine whether it is possible to apply isoreticular design principles to porous molecular materials. Overall, our automatic analysis of a large dataset gives a general insight into the relationships between molecular topologies and the topological nets of their pore network. We show that while porous molecular systems tend to pack similarly to non-porous molecules, the topologies of their pore distributions resemble those of more prominent porous materials, such as metal–organic frameworks and covalent organic frameworks.https://royalsocietypublishing.org/doi/10.1098/rsos.220813topology analysisporous organic cagesmolecular packings
spellingShingle Verity Anipa
Andrew Tarzia
Kim E. Jelfs
Eugeny V. Alexandrov
Matthew A. Addicoat
Pore topology analysis in porous molecular systems
Royal Society Open Science
topology analysis
porous organic cages
molecular packings
title Pore topology analysis in porous molecular systems
title_full Pore topology analysis in porous molecular systems
title_fullStr Pore topology analysis in porous molecular systems
title_full_unstemmed Pore topology analysis in porous molecular systems
title_short Pore topology analysis in porous molecular systems
title_sort pore topology analysis in porous molecular systems
topic topology analysis
porous organic cages
molecular packings
url https://royalsocietypublishing.org/doi/10.1098/rsos.220813
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AT andrewtarzia poretopologyanalysisinporousmolecularsystems
AT kimejelfs poretopologyanalysisinporousmolecularsystems
AT eugenyvalexandrov poretopologyanalysisinporousmolecularsystems
AT matthewaaddicoat poretopologyanalysisinporousmolecularsystems