Kinetics of Adsorption of Poly(o-methoxyaniline) Self-Assembled Films

摘要: The kinetics of adsorption poly(o-methoxyaniline) (POMA) via self-assembly has been investigated using UV-vis spectroscopy. Though experimental conditions, including type substrate, affect the amount polymer adsorbed, first POMA layer on glass substrates was shown to occur in two stages, reaching saturation within a few minutes. stage is represented by first-order with characteristic times 5-10 s. second also an exponential behavior t 1.5 and hundreds seconds, which valid for all when shift polaronic band beginning taken into account. believed indicate diffusion-controlled growth small domains formed during adsorption. appearance their subsequent are consistent scanning electron micrographs obtained at distinct time periods When made adsorb already POMA/poly(ethenesulfonic acid) multilayer, process became faster as number bilayers deposited increased.