Thin organic polymer films with properties of good chemicaI stability and good adhesion to glass and vitreous carbon and some metal substrates were prepared by plasma poly merization using n-butylamine as a monomer. Studies on IR spectrum and elemental analysis and other chemical properties showed that these polymer films had a very highly branched and cross-linked structure with good resistance to heat and erosion. The potential metric chemical sensors constructed by this kind of sensitive membranes of pla...