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Las organosílicas mesoporosas periódicas contienen anillos interconectados [Si ((CH2)) ]3 anillos

Kai Landskron¹, Benjamin D Hatton, Doug D Perovic

¹Materials Chemistry Research Group, Department of Chemistry, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada.

Science (New York, N.Y.)

|October 11, 2003

Resumen

Los investigadores desarrollaron un nuevo material de sílice orgánica mesoporosa periódica. Este nuevo nanocompuesto ofrece bajas constantes dieléctricas y estabilidad mecánica, lo que es prometedor para aplicaciones microelectrónicas.

Área de la Ciencia:

Ciencia de los materiales Ciencia de los materiales.
Nanotecnología La nanotecnología es la nanotecnología.
Química Inorgánica La Química Inorgánica es la química inorgánica.

Sus antecedentes:

Los materiales de sílice orgánica mesoporosa periódica (PMO) son compuestos avanzados con estructuras sintonizables.
Los PMO existentes a menudo carecen de funcionalidades orgánicas específicas o exhiben una estabilidad limitada.
Existe la necesidad de nuevos PMOs con propiedades mejoradas para aplicaciones especializadas.

Objetivo del estudio:

Informar sobre una nueva clase de materiales orgánicos de sílice mesoporosa periódica.
Investigar la síntesis y propiedades de un nuevo nanocompuesto a base de silsesquioxano de tres anillos.
Explorar el potencial de este material para aplicaciones microelectrónicas.

Principales métodos:

Autoensamblaje de un precursor cíclico de tres anillos de silsesquioxano, [(EtO) 2Si(CH2) ]3, con una mesofasa tensioactiva.
Caracterización de las morfologías de polvo y película orientada.
Medición de las constantes dieléctricas y la estabilidad mecánica de las películas resultantes.

Principales resultados:

Síntesis exitosa de una organosilica mesoporosa periódica con tres anillos interconectados [Si(CH2) ]3 unidades.
Demostración de una nueva estructura de nanocompuestos con dos grupos orgánicos puentes por átomo de silicio.
Las películas exhibieron bajas constantes dieléctricas y buena estabilidad mecánica.

Conclusiones:

El material reportado representa una nueva clase de nanocompuestos con potencial en microelectrónica.
La reactividad del grupo metileno del precursor permite una mayor funcionalización y desarrollo de materiales relacionados.
Este trabajo abre caminos para el diseño de materiales orgánicos avanzados de sílice con propiedades a medida.

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