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Synthesis of CoFe Prussian Blue Analogue/Poly Vinylidene Fluoride Nanocomposite Material with Improved Thermal Stability and Ferroelectric Property

Abstract

The Prussian blue analogues (PBAs) are recently synthesized in various hetrostructures like core-shell nanoparticles, layered thin films, nanosized metal/PBAs etc. for their multifunctional properties. However, herein, we report, the synthesis of a nanocomposite CoFe Prussian blue analogue (CoFePBA) molecular magnet with poly vinylidene fluoride (PVDF) polymer. The cyanide (CN) group of CoFePBAs interacts with the CF2 dipole of PVDF to integrate PBAs uniformly into a PVDF matrix. Interestingly, the composite material exhibits a spontaneous polarization which is mainly due to the formation of β phase of PVDF. However, the value of electric polarization is observed to be higher (~0.04C/cm2) than the spontaneous electric polarization (~0.02C/cm2) of the bare PVDF. The higher value of electric polarization is attributed to the enhanced dipole-dipole interactions between the fluoride atoms of PVDF and cyanide (–C≡N–) ligand of CoFePBAs. An inclusion of PVDF in CoFePBAs not only helps in ferroelectricity, but also improves the thermal stability of the CoFePBAs (up to ~ 158C), in contrast to the bare CoFePBAs, which is stable only up to ~65C.

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Publication details

The article was received on 25 Jan 2018, accepted on 08 Feb 2018 and first published on 09 Feb 2018


Article type: Paper
DOI: 10.1039/C8NJ00451J
Citation: New J. Chem., 2018, Accepted Manuscript
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    Synthesis of CoFe Prussian Blue Analogue/Poly Vinylidene Fluoride Nanocomposite Material with Improved Thermal Stability and Ferroelectric Property

    P. Bhatt, S. S. Meena, M. Mukadam, B. P. Mandal, A. K. Chauhan and S. M. Yusuf, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ00451J

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