FLUORESCENCE SPECTROSCOPIC STUDY ON THE INTERACTIONS AMONG THE COMPONENTS OF SOLID-ELECTROLYTE POLYACRYLONITRILE DIMETHYLFORMAMIDE/LICLO4/

The fluorescence (transmission) spectra of solid electrolyte polyacryl onitrile (PAN)/dimethylformamide (DMF)/LiClO4 with different combinati ons of its components have been measured with a radiation line at 280 nm. A fundamental analysis of the spectra indicates that interactions exist between the Li+ ions and the oxygen and/or nitrogen atoms of DMF . The interaction between the O atoms of DMF and the N atoms of the ni trile of PAN has also been observed. However, the interaction between LiClO4 and PAN is undetectable by the fluorescence spectra. This might imply that the transportation mechanism of the Li+ ions in polymer el ectrolytes is related not only to the polymer but also to the plastici zer in which the lithium salt is disserved.