Exploiting Reaction-Diffusion Conditions to Trigger Pathway Complexity in the Growth of a MOF
Coordinationpolymers(CPs),includingmetal-organicframeworks(MOFs),are crystallinematerialswithpromisingapplicationsin electronics,magnetism,catalysis,andgas storage/separation.However,the mechanismsandpath-waysunderlyingtheirformationremainlargelyundisclosed.Herein,we demonstratethatdiffusion-control...
| Autores: | , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/185127 |
| Acceso en línea: | https://hdl.handle.net/2445/185127 |
| Access Level: | acceso abierto |
| Palabra clave: | Polímers Cristal·lització Microfluídica Polymers Crystallization Microfluidics |
| Sumario: | Coordinationpolymers(CPs),includingmetal-organicframeworks(MOFs),are crystallinematerialswithpromisingapplicationsin electronics,magnetism,catalysis,andgas storage/separation.However,the mechanismsandpath-waysunderlyingtheirformationremainlargelyundisclosed.Herein,we demonstratethatdiffusion-controlledmixingofreagentsat the veryearlystagesof the crystallizationprocess(i.e., within 40 ms),achievedby usingcontinuous-flowmicrofluidicdevices,can be usedto enablenovelcrystallizationpathwaysofaprototypicalspin-crossover MOFtowards itsthermodynamicproduct.In particular,twodistinctandunprecedentednucleation-growth pathwayswere experimen-tallyobservedwhencrystallizationwas triggeredundermicro-fluidicmixing.Full-atommoleculardynamicssimulationsalsoconfirmthe occurrenceof thesetwo distinctpathwaysduringcrystalgrowth.In sharpcontrast,acrystallizationby particleattachmentwas observedunderbulk(turbulent)mixing.Theseunprecedentedresultsprovideasoundbasisfor understandingthe growth of CPsand openup newavenuesfor the engineer-ing of porousmaterialsby usingout-of-equilibriumconditions |
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