Thiophene Polymer-Grafted Barium Titanate Nanoparticles toward Nanodielectric Composites

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• 作者：Yali Qiao ; Md. Sayful Islam ; Lei Wang ; Yi Yan ; Jiuyang Zhang ; Brian C. Benicewicz ; Harry J. Ploehn ; Chuanbing Tang
• 刊名：Chemistry of Materials
• 出版年：2014
• 出版时间：September 23, 2014
• 年：2014
• 卷：26
• 期：18
• 页码：5319-5326
• 全文大小：511K
• ISSN：1520-5002

文摘

This paper reports a strategy for controlling surface chemistry of barium titanate (BaTiO₃) using surface-initiated reversible addition鈥揻ragmentation chain transfer (RAFT) polymerization of an oligothiophene monomer. The modular chemistry on the engineering of nanoparticles provides a facile pathway to compatibilizing dielectric nanofillers in a matrix of oligothiophene polymers, leading to the formation of nanodielectric composites with permittivity at 鈭?0 and dielectric loss <0.02 over a wide range of frequencies (1 kHz to 1 MHz). This approach could be generalized to a variety of nanoparticles with tunable dipolar polymer shells for the development of novel dielectric nanocomposite systems for energy storage.