@article {44616,
	title = {Flexible composite mechanical energy harvester from a ferroelectric organoamino phosphonium salt},
	journal = {Angewandte Chemie-International Edition},
	volume = {57},
	year = {2018},
	month = {JUL},
	pages = {9054-9058},
	abstract = {<p>A new binary organic salt diphenyl diisopropylamino phosphonium hexaflurophosphate (DPDPPF6) was shown to exhibit a good ferroelectric response and employed for mechanical energy harvesting application. The phosphonium salt crystallizes in the monoclinic noncentrosymmetric space group Cc and exhibits an H-bonded 1D chain structure due to N-HF interactions. Ferroelectric measurements on the single crystals of DPDPPF6 gave a well-saturated rectangular hysteresis loop with a remnant (P-r) polarization value of 6Ccm(-2). Further, composite devices based on polydimethylsiloxane (PDMS) films for various weight percentages (3, 5, 7, 10 and 20wt\%) of DPDPPF6 were prepared and examined for power generation by using an impact test setup. A maximum output peak-to-peak voltage (V-PP) of 8.5V and an output peak-to-peak current (I-PP) of 0.5A was obtained for the non-poled composite film with 10wt\% of DPDPPF6. These results show the efficacy of organic ferroelectric substances as potential micropower generators.</p>},
	keywords = {binary phosphonium salts, energy conversion, ferroelectricity, hydrogen bonding, polymer composites},
	issn = {1433-7851},
	doi = {10.1002/anie.201805479},
	author = {Vijayakanth, Thangavel and Srivastava, Anant Kumar and Ram, Farsa and Kulkarni, Priyangi and Shanmuganathan, Kadhiravan and Praveenkumar, Balu and Boomishankar, Ramamoorthy}
}
@article {46893,
	title = {Piezoelectric energy harvesting from a ferroelectric hybrid salt [Ph3MeP](4)[Ni(NCS)(6)] embedded in a polymer matrix},
	journal = {Angewandte Chemie-International Edition},
	volume = {59},
	year = {2020},
	month = {JUN },
	pages = {10368-10373},
	type = {Article},
	abstract = {<p>Organic-inorganic hybrid ferroelectrics are an exciting class of molecular materials with promising applications in the area of energy and electronics. The synthesis, ferroelectric and piezoelectric energy harvesting behavior of a 3d metal ion-containing A(4)BX(6) type organic-inorganic hybrid salt [Ph3MeP](4)[Ni(NCS)(6)] (1) is now presented. P-E hysteresis loop studies on 1 show a remnant ferroelectric polarization value of 18.71 mu C cm(-2), at room temperature. Composite thermoplastic polyurethane (TPU) devices with 5, 10, 15 and 20 wt \% compositions of 1 were prepared and employed for piezoelectric energy harvesting studies. A maximum output voltage of 19.29 V and a calculated power density value of 2.51 mW cm(-3) were observed for the 15 wt \% 1-TPU device. The capacitor charging experiments on the 15 wt \% 1-TPU composite device shows an excellent energy storage performance with the highest stored energies and measured charges of 198.8 mu J and 600 mu C, respectively.</p>
},
	keywords = {energy conversion, mechanical properties, non-covalent interactions, organic-inorganic hybrid composites, Phosphorus},
	issn = {1433-7851},
	doi = {10.1002/anie.202001250, Early Access Date = APR 2020},
	author = {Vijayakanth, Thangavel and Ram, Farsa and Praveenkumar, Balu and Shanmuganathan, Kadhiravan and Boomishankar, Ramamoorthy}
}
