Single Chain Collapse Versus Adsorption

The studies on single-chain adsorption on flat substrates were based on the same models used for the studies of single chains in the bulk, as described above. One issue that was addressed is the competition between adsorptimi, coUapse, and crystallization of tethered single chains [5]. 

To test this question, the SAW tethered to an impenetrable wall has been studied, using a square well adsorption potential of depth U and range W. If tmiversality 

Another interesting question is the effect of chain stiffness on polymer adsorption. It has been found [34] that increase of p — oo causes a crossover in the character of the adsorption transition from second order (for finite 7p) to first order as diverges. This finding is compatible with mean field theories [35]. However, a complication that has not been analyzed before is the finding that the persistence length is not only dependent on the bending potential, but also depends on the distance from the adsorption transition [34]. 

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