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Updated: Jun 26, 2025
08:42
Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
Published on: July 10, 2017
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Reconstrucción 2D a 3D de las estructuras orgánicas covalentes ligadas al boro
Xue Wang1,2, Thomas Fellowes1,2, Mounib Bahri3
1Leverhulme Research Centre for Functional Materials Design, University of Liverpool, Liverpool L7 3NY, U.K.
Journal of the American Chemical Society
|May 9, 2024
Resumen
Los investigadores transformaron un marco orgánico covalente 2D (COF) en un COF 3D reorganizando su hibridación de boro. Esta nueva reconstrucción química expande el tamaño de los poros de COF y crea una estructura 3D a partir de una red 2D.
Área de la Ciencia:
- Ciencias de los materiales
- Química
- Nanotecnología
Sus antecedentes:
- La transformación sintética de marcos orgánicos covalentes 2D (COF) en estructuras 3D es un desafío.
- Los métodos actuales a menudo se basan en el enlace cruzado entre capas de enlaces alqueno o alquino.
Objetivo del estudio:
- Informar de la primera reconstrucción química de un COF 2D en un COF 3D con una reorganización completa de la celosía.
- Investigar el mecanismo de la hibridación de boro desencadenado por bases para la transformación de COF.
Principales métodos:
- Utilizó la hibridación de boro desencadenada por bases para inducir la reconstrucción química de un COF 2D.
- Enlaces de éster de boronato trigonal convertidos en enlaces de espiroborato aniónico tetraédrico.
- Se analizó la estructura 3D de COF resultante y el tamaño de los poros mediante estudios mecanicistas.
Principales resultados:
- Logró el primer ejemplo de transformación de COF 2D a COF 3D a través de la reorganización de la red.
- Unidades de cobalto coplanar transformadas (PcCo) en una disposición perpendicular en 3D.
- El tamaño de los poros de COF se expandió de 2,45 nm (2D sql) a 3,02 nm (3D nbo) a través de la formación de enlaces espiroborados.
Conclusiones:
- Se demostró una nueva vía de protodeboronación catalizada por bases para la formación de espiroborato en COF.
- Se estableció una nueva estrategia para crear COF 3D con características de poro mejoradas.
- Destacó el potencial de la hibridación del boro para el diseño avanzado del marco.
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