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The cardiac conduction system produces and transmits electrical impulses that prompt myocardial contraction, ensuring efficient heart function. This intricate system ensures that the heart beats in a coordinated and efficient manner, beginning with the atria and then the ventricles. The conduction system optimizes cardiac output by maintaining this precise sequence, which is crucial for adequate blood circulation.
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Cristales líquidos anfifílicos basados en ciclodextrina para la conducción de protones

Pier-Luc Champagne, David Ester1, Danielle Polan

  • 1Department of Chemistry , Simon Fraser University , 8888 University Drive , Burnaby , British Columbia V5A 1S6 , Canada.

Journal of the American Chemical Society
|May 24, 2019
PubMed
Resumen

Los nuevos materiales basados en ciclodextrina forman cristales líquidos ordenados para la conducción de protones. Estos poli (ácido carboxílico) anfifílicos respetuosos con el medio ambiente muestran una alta conductividad, allanando el camino para nuevos materiales conductores de protones.

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Área de la Ciencia:

  • Ciencias de los materiales
  • Química de los polímeros
  • Química supramolecular

Sus antecedentes:

  • Las ciclodextrinas (CD) son oligosacáridos cíclicos versátiles con propiedades estructurales únicas.
  • Los conductores protónicos son cruciales para aplicaciones de energía como las pilas de combustible.
  • El desarrollo de nuevos materiales conductores de protones a partir de fuentes sostenibles es un área de investigación clave.

Objetivo del estudio:

  • Investigar nuevas poli (ácido carboxílico) anfifílicas basadas en ciclodextrina (CD) como conductores protónicos.
  • Explorar el comportamiento de autoensamblaje y las propiedades cristalinas líquidas de estos nuevos materiales.
  • Para evaluar la conductividad de protones de estos materiales basados en CD en estados sólidos.

Principales métodos:

  • Síntesis de poli (ácido carboxílico) amfifílico utilizando ciclodextrinas no tóxicas.
  • Caracterización del autoensamblaje en mesofasas cristalinas líquidas smécticas altamente ordenadas.
  • Medición de la conductividad de los protones en condiciones variables de temperatura y humedad.

Principales resultados:

  • Los materiales sintetizados se autoensamblan en mezofasas cristalinas líquidas smectas bien definidas.
  • Las redes de enlaces de hidrógeno 2D de largo alcance se formaron dentro de las mesofasas.
  • Se lograron impresionantes conductividades de protones en estado sólido de hasta 1,4 × 10 S cm-1 a 70 ° C y un 95% de humedad.

Conclusiones:

  • Los cristales líquidos anfifílicos basados en ciclodextrina representan una nueva clase de materiales conductores de protones.
  • La estructura única y las redes de enlaces de hidrógeno contribuyen a una alta conductividad de protones.
  • Estos materiales respetuosos con el medio ambiente ofrecen una alternativa prometedora para aplicaciones conductoras de protones.