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Efficient Microwave-Assisted Functionalization of the Aurivillius-Phase Bi2SrTa2O9
Yanhui Wang1, Emilie Delahaye1, Cédric Leuvrey1
1Institut de Physique et Chimie des Matériaux de Strasbourg and Labex NIE, University of Strasbourg, CNRS UMR 7504 , 23 rue du Loess, BP 43, 67034 Strasbourg cedex 2, France.
Abstract:
A new method of acidification and subsequent functionalization of the Aurivillius-phase Bi2SrTa2O9 (BST), using microwave irradiation, was developed. This method enables to obtain hybridized phases from layered BST. Functionalization of BST by various kinds of amines and diamines can be achieved in a few hours only, compared to much longer time (over a week) using conventional heating. Good crystallinity of the compounds is kept. In addition, a microwave-assisted preintercalation strategy was developed, allowing inserting new amines (bearing cyclic or aromatic groups) between the oxide layers previously unseen in this type of compound. This work opens new perspectives for the fast and easy functionalization of layered oxides with more elaborated molecules.
