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Single-molecule force spectroscopy, as implemented in an atomic force microscope, provides a rarely used method by which to monitor dynamic processes that occur near surfaces. Here, a methodology is presented and characterized that facilitates the study of polymer bridging across nanometer-sized gaps. The model system employed is that of DNA-based reversible polymers, and an automated procedure is...
The metal ion complexing properties of highly preorganized non-macrocyclic ligands in aqueous solution are discussed and contrasted with those of less preorganized analogues that have simple ethylene bridges between the donor atoms. High levels of preorganization can be achieved using cyclohexenyl bridges between ligand donor atoms, use of reinforced bridges such us bispidines, or by use of extended...
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