Synthesis and properties of polyacetylene formed using Ti(OBu)/sub 4/-polyalumoxane catalysts

Summary form only given. Polyacetylene films were synthesized using homogeneous catalytic systems based on Ti(O-C/sub 4/H/sub 9/)/sub 4/, Al(C/sub 2/H/sub 5/)/sub 3/, poly(isobutylalumoxanes) (MM=470,900) and poly(ethylalumoxane) (MM=560). The physic-chemical characteristics of these films were studied with IR spectrometry, 2-mm ESR, cyclic voltammetry and conductometry. Polyacetylene synthesized using Ti(O-C/sub 4/H/sub 9/)/sub 4/-poly(isobutylalumoxane) (MM=900) catalyst has a higher density, a lower rate of oxidation and ageing as well more stable electric properties after six months of storage in argon at 0/spl deg/C. Thus, it can be concluded from the data obtained that an isobutyl substituent in polyalkylalumoxanees is more preferable that the ethyl one and increase of molecular mass of poly(isobutylatumoxanes) leads, both to the higher mechanical strength and conductivity of polyacetylene films.