Reversible Molecular Adsorption Based on Multiple-Point Interaction by Shrinkable Gels

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Science  19 Nov 1999:
Vol. 286, Issue 5444, pp. 1543-1545
DOI: 10.1126/science.286.5444.1543

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A general approach is presented for creating polymer gels that can recognize and capture a target molecule by multiple-point interaction and that can reversibly change their affinity to the target by more than one order of magnitude. The polymers consist of majority monomers that make the gel reversibly swell and shrink and minority monomers that constitute multiple-point adsorption centers for the target molecule. Multiple-point interaction is experimentally proven by power laws found between the affinity and the concentration of the adsorbing monomers within the gels.

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