Abstract
Series of boron-complexed ion conducting dendritic electrolytes were prepared and suggested as 'cobweb' model. The hydroxyl functionalized Jeffamine (R) cored polyamidoamine (PAMAM) type dendrimers with various core size and generation were synthesized and their boron-cross linked form was obtained by using BH3-THF complex. During cross linking of the dendrimers, lithium trifluoromethane-sulfonate (CF3SO3Li) salt was added as dopants with different stoichiometric ratios. The structure and interactions of boron-cross linked dendritic electrolytes were investigated by using FT-IR. NMR and Thermograviimetric analysis (TGA). The ionic conductivities of these novel boron-cross linked dendritic electrolytes were studied by dielectric-impedance spectroscopy. Ionic conductivity of the dendritic electrolytes followed Vogel-Tammann-Fulcher (VTF) relationships. The results showed that the highest conductivity of 1.6 x 10(-4) S/cm was obtained at 100 degrees C for electrolytes T5000(6-OH)-20. (C) 2012 Elsevier B.V. All rights reserved.