Three dimensional nanoscale analysis reveals aperiodic mesopores in a covalent organic framework and conjugated microporous polymer
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Three dimensional nanoscale analysis reveals aperiodic mesopores in a covalent organic framework and conjugated microporous polymer

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Three dimensional nanoscale analysis reveals aperiodic mesopores in a covalent organic framework and conjugated microporous polymer

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dc.contributor.author Stoppiello, Craig T.
dc.contributor.author Isla, Helena
dc.contributor.author Martínez-Abadía, Marta
dc.contributor.author Fay, Michael W.
dc.contributor.author Parmenter, Christopher D.
dc.contributor.author Roe, Martin J.
dc.contributor.author Lerma-Berlanga, Belén
dc.contributor.author Martí Gastaldo, Carlos
dc.contributor.author Mateo-Alonso, Aurelio
dc.contributor.author Khlobystov, Andrei N.
dc.date.accessioned 2019-05-02T14:25:27Z
dc.date.available 2019-05-02T14:25:27Z
dc.date.issued 2019
dc.identifier.uri http://hdl.handle.net/10550/70039
dc.description.abstract The integrated analytical approach developed in this study offers a powerful methodology for the structural characterisation of complex molecular nanomaterials. Structures of a covalent organic framework based on boronate esters (COF-5) and a conjugated microporous polymer (Aza-CMP) have been investigated by a combination of several electron microscopy techniques elucidating the three-dimensional topology of the complex polycrystalline (COF) and non-crystalline (CMP) materials. Unexpected, aperiodic mesoporous channels of 20-50 nm in diameter were found to be penetrating the COF and CMP particles, which cannot be detected by X-ray diffraction techniques. The mesopores appear to be stable under a range of different conditions and accessible to gas molecules, exhibiting a particular bonding capability with CO2 in the case of the CMP. The mesoporosity is unrelated to the intrinsic chemical structures of the COF or CMP but rather it reflects the mechanisms of polymer particle formation in a polycondensation reaction. The mesopores may be templated by clusters of solvent molecules during the COF or CMP synthesis, leaving cavities within the polymer particles. The unexpected mesoporosity discovered in COF and CMP materials begs for re-assessment of the nature of framework materials and may open new opportunities for applications of these molecular materials in gas sorption or catalysis.
dc.language.iso eng
dc.relation.ispartof Nanoscale, 2019, vol. 11, p. 2848-2854
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Stoppiello, Craig T. Isla, Helena Martínez-Abadía, Marta Fay, Michael W. Parmenter, Christopher D. Roe, Martin J. Lerma-Berlanga, Belén Martí Gastaldo, Carlos Mateo-Alonso, Aurelio Khlobystov, Andrei N. 2019 Three dimensional nanoscale analysis reveals aperiodic mesopores in a covalent organic framework and conjugated microporous polymer Nanoscale 11 2848 2854
dc.subject Materials nanoestructurats
dc.subject Química
dc.title Three dimensional nanoscale analysis reveals aperiodic mesopores in a covalent organic framework and conjugated microporous polymer
dc.type info:eu-repo/semantics/article
dc.date.updated 2019-05-02T14:25:28Z
dc.identifier.doi https://doi.org/10.1039/C8NR10086A
dc.identifier.idgrec 131667

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