Reflective and/or conductive surface silvered polyimide films have been prepared by using random and block copolyimide derived from pyromellitic dianhydride (PMDA), 4,4-oxydiphthalic anhydride (ODPA) and 4,4'-oxydiam line (4,4'-ODA) as matrix and (trifluoroacetylacetonato) silver(I) (AgTFA) freshly synthesized from silver acetate and trifluoroacetylacetone as silver precursor. Influence of copolyimide structure on film metallization process and development of film reflectivity and conductivity during the thermal curing cycle were investigated. The metallized films were characterized by DMTA, X-ray diffraction, XPS, TEM, SEM. (c) 2006 Elsevier Ltd. All rights reserved.