161Dy\mathrm{^{161}Dy} Mössbauer study of the endohedral metallofullerenes Dy@Cn(n=80,82,84)\mathrm{Dy@C_n(n = 80, 82, 84)}

Mössbauer studies of Dy@Cn (n = 80, 82, 84) metallofullerenes were performed at 4.2, 9.6 and 78 K with the 161Dy (25.6 keV) resonance. The observed spectra consist of two subspectra splitted by magnetic hyperfine fields near to the full moment value of trivalent Dy. Paramagnetic relaxation is observed even at 4.2 K. The observed isomer shift is consistent with the Dy3+ state and indicates a full charge transfer to the fullerene cage

MACROMOLECULAR COMPOUNDS AND POLYMERIC MATERIALS Chemical Structure and Physicochemical Properties of Oxidized Hydrolysis Lignin

Abstract-The structure of hydrolysis lignin oxidized with hydrogen peroxide in acid medium was studied by NMR spectroscopy and by matrix-assisted laser desorption/ionization and electrospray ionization mass spectrometry. The sorption, ion-exchange, and surfactant properties of oxidized hydrolysis lignin were studied, and possible application areas of this substance were suggested