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Getting order in mesostructured thin films, from pore organization to crystalline walls, the case of 3-glycidoxypropyltrimethoxysilane

Carboni, Davide and Pinna, Alessandra and Amenitsch, Heinz and Casula, Maria Francesca and Loche, Danilo and Malfatti, Luca and Innocenzi, Plinio (2015) Getting order in mesostructured thin films, from pore organization to crystalline walls, the case of 3-glycidoxypropyltrimethoxysilane. Physical Chemistry Chemical Physics (17), p. 10679-10686. ISSN 1463-9076. Article.

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DOI: 10.1039/C5CP00433K

Abstract

A new type of mesostructured hybrid organic–inorganic film has been synthesised by evaporation-induced self-assembly using 3-glycidoxypropyltrimethoxysilane as the precursor and a tri-block copolymer, Pluronic F127, as the template. The chemistry has been tuned to form bridged polysilsesquioxanes that self-organise into ordered lamellar structures. Controlled aging under highly basic conditions, which has been monitored by Raman and infrared spectroscopy, has been used to obtain the layered ordered hybrid structures in the precursor sol. The pH of the sol has been adjusted to form the micelles that act as templates during solvent evaporation. The self-assembly of the system has been studied in situ by small and wide angle X-ray scattering using a synchrotron light source, which has confirmed both the formation of hybrid layered structures and the long-range organization of the mesophase in the hybrid films. The present approach allows ordering the hybrid film on two different length scales; at the end of film processing, hybrid crystals are incorporated into the pore walls and the micelles are arranged within the films with long range order.

Item Type:Article
ID Code:10903
Status:Published
Refereed:Yes
Uncontrolled Keywords:Mesostructured thin films, 3-glycidoxypropyltrimethoxysilane, tri-block copolymer, hybrid crystals
Subjects:Area 09 - Ingegneria industriale e dell'informazione > ING-IND/22 Scienza e tecnologia dei materiali
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Architettura, Design e Urbanistica > LMNT-Laboratorio di Scienza dei Materiali e NanoTecnologie
Publisher:Royal Society of Chemistry
ISSN:1463-9076
Deposited On:05 Jun 2015 17:54

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