Thiophene Polymer-Grafted Barium Titanate Nanoparticles toward Nanodielectric Composites
writer:Yali Qiao, Md. Sayful Islam, Lei Wang, Yi Yan, Jiuyang Zhang, Brian C. Benicewicz, Harry J. Ploehn,
keywords:Thiophene, Barium Titanate, Nanodielectric
source:期刊
specific source:Chem. Mater. 2014, 26, 5319?5326
Issue time:2014年
This paper reports a strategy for controlling surface chemistry of barium titanate (BaTiO3 ) using surfaceinitiated reversible addition?fragmentation chain transfer (RAFT) polymerization of an oligothiophene monomer. The modular chemistry on the engineering of nanoparticles provides a facile pathway to compatibilizing dielectric nano?llers in a matrix of oligothiophene polymers, leading to the formation of nanodielectric composites with permittivity at ~20 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.