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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.citation	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.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.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	journal article	es_ES
dc.date.updated	2019-05-02T14:25:28Z
dc.identifier.doi	10.1039/C8NR10086A
dc.identifier.idgrec	131667
dc.rights.accessRights	open access	es_ES