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Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
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Estrategia derivada topológica para marcos orgánicos covalentes tridimensionales de grandes poros
Haorui Zheng1, Hui Li1, Jie Ji1
1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, P. R. China.
Journal of the American Chemical Society
|October 21, 2025
Resumen
Los investigadores diseñaron nuevos marcos orgánicos covalentes tridimensionales (3D COF) utilizando estrategias basadas en la topología. Este enfoque creó con éxito poros ultragrandes de hasta 5.1 nm, superando los desafíos de interpenetración estructural en materiales porosos.
Área de la Ciencia:
- Ciencias de los materiales
- Química
- Nanotecnología
Sus antecedentes:
- El desarrollo de marcos orgánicos covalentes tridimensionales (3D COF) con poros ultragrandes se ve obstaculizado por la interpenetración estructural.
- La interpenetración a menudo conduce a poros más pequeños y menos accesibles, lo que limita las aplicaciones.
Objetivo del estudio:
- Para superar los desafíos de interpenetración en la síntesis de COF 3D.
- Diseñar y sintetizar COF 3D con poros ultragrandes y accesibles utilizando un enfoque basado en la topología.
Principales métodos:
- Utilizó una estrategia de diseño impulsada por la topología basada en redes transitivas de borde.
- Transformación de las redes SCU en marcos derivados mmm y jcg mediante selección de monómeros controlada por simetría.
- Estructuras de marco y tamaños de poros caracterizados mediante técnicas avanzadas, incluidos estudios de encapsulación macromolecular.
Principales resultados:
- Sintetizó dos series distintas de COF 3D: mmm (JUC-693 a JUC-695) y jcg (JUC-696 a JUC-698).
- Los marcos de la serie jcg exhibieron una expansión de poros controlada, logrando un diámetro de poros récord de 5.1 nm en JUC-698.
- Los estudios de encapsulación macromolecular confirmaron la integridad y accesibilidad de los poros ultragrandes diseñados.
Conclusiones:
- El diseño dirigido por la topología es una estrategia poderosa para superar las barreras de interpenetración en materiales porosos.
- Este enfoque permite la creación de COF 3D con poros ultragrandes controlados con precisión.
- Los marcos desarrollados tienen potencial para aplicaciones que requieren una gran superficie y un transporte molecular selectivo.
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