PROTECTIVE FILMS ON COPPER BY MULTISTEP MODIFICATION OF AN ALKANETHIOL MONOLAYER WITH CHLOROSILANES AND ALKANEDIOL

Two-dimensional polymer films based on an alkanethiol (11-mercaplo-1-u ndecanol) monolayer modified with tetrachlorosilane, 1,2-bis(trichloro silyl)ethane, 1,8-octanediol, and/or octyltriclorosilane were fabricat ed on the surface of a copper electrode. The films were characterized by Fourier transform infrared reflection spectroscopy and contact angl e measurement. The protective efficiency of the film was examined by p olarization and impedance measurements of the covered electrode in aer ated 0.5 M Na2SO4. A markedly high protective efficiency of the film p repared by multistep modification of the 11-mercapto-1-undecanol monol ayer with 1,2-bis(trichlorosilyl)ethane, 1,8-octanediol, and octyltric hlorosilane was obtained, being 98.7%, comparable to the value of the most effective film prepared previously Importantly, the time associat ed with preparing the previous film was significantly reduced.