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La polimerización de apertura de anillos de fosfonatos cíclicos: acceso a polímeros inorgánicos con una cadena

Marius I Arz¹, Vincent T Annibale¹, Nicole L Kelly^2,3

¹School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , United Kingdom.

Journal of the American Chemical Society

|February 7, 2019

Resumen

Los investigadores desarrollaron nuevos polímeros inorgánicos con columnas vertebrales de fósforo y oxígeno y grupos laterales de arilo. Estos polímeros dinámicos, sintetizados a través de la polimerización de apertura de anillos, ofrecen una despolimerización ajustable y una alta estabilidad térmica para aplicaciones de película delgada.

Área de la Ciencia:

Ciencias de los materiales
Química de los polímeros
Química inorgánica

Sus antecedentes:

Los polímeros inorgánicos ofrecen propiedades únicas en comparación con sus homólogos orgánicos.
El desarrollo de nuevos métodos de polimerización es crucial para los materiales avanzados.
Los polímeros a base de fósforo son de interés por su estabilidad térmica y química.

Objetivo del estudio:

Para sintetizar y caracterizar una nueva clase de polímeros inorgánicos con espina dorsal P-O.
Investigar el comportamiento dinámico y la despolimerización de estos polímeros en solución.
Evaluar la estabilidad térmica y las capacidades de formación de película de los materiales sintetizados.

Principales métodos:

Polimerización por apertura de anillos de fosfonatos cíclicos para crear polímeros con más de 70 unidades de repetición.
Estudios dinámicos basados en soluciones para analizar la despolimerización selectiva.
Caracterización de las propiedades del polímero, incluida la estabilidad térmica y la formación de películas.
Análisis estructural de los precursores cíclicos de fosfonato (anillos de 6 y 12 miembros).

Principales resultados:

Síntesis exitosa de polímeros inorgánicos con cadenas principales P-O y grupos laterales de arilo.
Demostración del comportamiento dinámico en solución, lo que permite la depolimización selectiva ajustable.
Los polímeros presentan una alta estabilidad térmica y se pueden fabricar en películas delgadas independientes.
Se logró la caracterización estructural de los monómeros cíclicos de fosfonato.

Conclusiones:

Se ha sintetizado con éxito una nueva clase de polímeros inorgánicos dinámicos basados en enlaces P-O.
La despolimerización ajustable en solución abre posibilidades para la degradación o el reciclaje de materiales controlados.
Estos polímeros poseen una excelente estabilidad térmica y procesamiento para aplicaciones de película delgada.

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