PREPARATION AND STUDY ON MAGNETIC-PROPERTIES OF LB FILMS OF AMETHYL-4,5-DIHYDRO-1H-IMIDAZOLYL-1-OXYL-3-N-OXIDE

The organic molecule with a nitroxyl free radical and hydrophobic alky l chain, 2-(4-(hexadecyloxy) 4,5,5-tetramethyl-4,5-dihydro-1H-imidazol yl-1-oxyl 3-N-oxide (HTDIOO), was designed and synthesized. Under suit able conditions, the stable monolayer of this compound formed at the a ir-water interface could be successfully transferred onto various subs trates by the Langmuir-Blodgett (LB) method. The structural characteri stics of the LB films were studied by atomic force microscopy, Fourier transform IR spectroscopy, electron spin resonance and small-angle X- ray diffraction techniques. Using magnetic force microscopy, we have o bserved a quasi-one-dimensional band structure composed of magnetic do mains in the local regions of HTDIOO LB films.