A Green's-function perturbation theory for nonuniform semiflexible polymers: Phases and their transitions near attracting surfaces

Kuznetsov, Dmitri V.; Sung, Wokyung
September 1997
Journal of Chemical Physics;9/22/1997, Vol. 107 Issue 12, p4729
Academic Journal
The chain stiffness is an important characteristic that affects the properties of many biological and synthetic polymers. We develop a perturbation theory in the framework of a Green's-function approach to treat the chain stiffness effects systematically. This scheme incorporates the standard flexible-chain Edwards equation in the zeroth order. When applied to the chains on the surface, the theory predicts novel features in adsorption-desorption transitions coupled with types of isotropic to nematic ordering transitions, giving a rigorous quantitative basis for our previous scaling theory results. We analyze the phase diagrams, and various quantities that detail the chain distribution including orientation-order-parameter distribution of the adsorbed semiflexible polymers.


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