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Ensamblajes de plaquetas hexagonales supramoleculares con dimensiones uniformes y controladas con precisión

Gangfeng Chen, Guangpu Zhang, Bixin Jin

  • 1RIKEN Centre for Emergent Matter Science , Saitama 351-0198 , Japan.

Journal of the American Chemical Society
|September 12, 2019
PubMed
Resumen

Los investigadores desarrollaron un nuevo método para crear plaquetas hexagonales precisas a partir de materiales blandos utilizando complejos de inclusión cristalina. Esta técnica de ensamblaje supramolecular permite dimensiones controladas y la formación de estructuras hexagonales concéntricas.

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Área de la Ciencia:

  • Ciencias de los materiales
  • Química supramolecular
  • Nanotecnología

Sus antecedentes:

  • Las estructuras geométricas son frecuentes en la naturaleza y en los sistemas de ingeniería.
  • La fabricación de ensamblajes geométricos precisos de abajo hacia arriba, especialmente a partir de materiales blandos, sigue siendo un desafío importante.

Objetivo del estudio:

  • Presentar un método general para la fabricación de plaquetas coloidalmente estables y hexagonales.
  • Para lograr un control preciso de las dimensiones en la síntesis de conjuntos geométricos a partir de materiales blandos.

Principales métodos:

  • Formación de complejos de inclusión cristalina mediante el uso de tris-o-fenilenodioxiclotrifosfazeno y copolímeros de bloque.
  • Utilizando el crecimiento de la dislocación del tornillo dentro de complejos de inclusión para la formación de plaquetas.
  • Utilizando el crecimiento gradual de semillas para crear plaquetas hexagonales concéntricas.

Principales resultados:

  • Se han preparado con éxito plaquetas hexagonales uniformes con dimensiones controlables.
  • Demostró la capacidad de producir plaquetas hexagonales concéntricas a través de un enfoque de crecimiento semillado.
  • El método produce conjuntos hexagonales coloidalmente estables.

Conclusiones:

  • Se ha establecido un método general y eficaz de ensamblaje supramolecular para la fabricación de plaquetas hexagonales.
  • El control dimensional preciso es posible a través del crecimiento de la dislocación del tornillo en complejos de inclusión cristalina.
  • Este enfoque ofrece una vía para crear estructuras geométricas complejas a partir de materiales blandos.