@article {45722,
	title = {Polypropylene-based conducting nanocomposites: effect of aspect ratio of second conducting filler on the electrical percolation},
	journal = {Journal of Thermoplastic Composite Materials},
	volume = {30},
	year = {2017},
	month = {JUN},
	pages = {840-854},
	type = {Article},
	abstract = {<p>Powder-mixed polypropylene (PP)-graphite binary composites exhibit an electrical percolation threshold at 10 wt\% graphite signifying insulator-semiconductor transition. Three conducting fillers such as carbon black (CB), sonicated expanded graphite (s-ExGr), and carbon nanofiber (CNF) are mixed with PP-7 wt\% graphite binary composites. The electrical percolation threshold has been found to have inverse relation to the aspect ratio of second conducting fillers in hybrid composites. The aspect ratio of second conducting fillers varies in the order CB \&lt; ExGr \&lt; CNF. The electrical percolation threshold is found to vary for the hybrid composites as 2.2 wt\% for CB addition, 0.75 wt\% for ExGr addition, and 0.2 wt\% for CNF addition in the PP-7 wt\% graphite binary composites. When the aspect ratio of second conducting fillers increases, they reduce the barrier for the charge transport. The second conducting fillers occupy the interspace of graphite and alternating current studies show that the effective dielectric constant increases with the concentration of second conducting filler in the hybrid composites. The composites are characterized by transmission electron microscopy and scanning electron microscopy. Melt-crystallized PP-7 wt\% graphite-CNF composites exhibit higher percolation threshold due to decrease in the polymer viscosity which increases the interparticulate distance.</p>},
	keywords = {carbon nanofiber, Conducting polymer composites, Electrical properties, graphite nanosheets, hybrid composites, percolation, scanning, transmission electron microscopy},
	issn = {0892-7057},
	doi = {10.1177/0892705715614063},
	author = {Ramanujam, B. T. S. and Radhakrishnan, S. and Deshpande, S. D.}
}
@article {49140,
	title = { Ferroelectric aminophosphonium cyanoferrate with a large electrostrictive coefficient as a piezoelectric nanogenerator},
	journal = {Angewandte Chemie-International Edition},
	volume = {62},
	year = {2023},
	month = {JAN },
	type = {Article},
	abstract = {<p>
	Hybrid materials possessing piezo- and ferroelectric properties emerge as excellent alternatives to conventional piezoceramics due to their merits of facile synthesis, lightweight nature, ease of fabrication and mechanical flexibility. Inspired by the structural stability of aminophosphonium compounds, here we report the first A(3)BX(6) type cyanometallate [Ph-2((PrNH)-Pr-i)(2)P](3)[Fe(CN)(6)] (1), which shows a ferroelectric saturation polarization (P-s) of 3.71 mu C cm(-2). Compound 1 exhibits a high electrostrictive coefficient (Q(33)) of 0.73 m(4) C-2, far exceeding those of piezoceramics (0.034-0.096 m(4) C-2). Piezoresponse force microscopy (PFM) analysis demonstrates the polarization switching and domain structure of 1 further confirming its ferroelectric nature. Furthermore, thermoplastic polyurethane (TPU) polymer composite films of 1 were prepared and employed as piezoelectric nanogenerators. Notably, the 15 wt \% 1-TPU device gave a maximum output voltage of 13.57 V and a power density of 6.03 mu W cm(-2).</p>
},
	keywords = {Cyanometallates, energy conversion, H-bonding, hybrid composites, Phosphorus},
	issn = {1433-7851},
	doi = {10.1002/anie.202214984},
	author = {Vijayakanth, Thangavel and Sahoo, Supriya and Kothavade, Premkumar and Sharma, Vijay Bhan and Kabra, Dinesh and Zareba, Jan K. K. and Shanmuganathan, Kadhiravan and Boomishankar, Ramamoorthy}
}
