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.