Time and distance dependence of reversible polymer bridging followed by single-molecule force spectroscopy.

Journal Article (Journal Article)

Polymer bridging between surfaces plays an important role in a range of fundamental processes in the material and life sciences. Bridges formed by main-chain reversible polymers differ from their covalent analogs in that they can dynamically adjust their size and shape in response to external stimuli and have the potential to reform following bond scission. In this work, the time and distance dependence of main-chain reversible polymer bridge formation are studied using an atomic force microscope. The bridging process was studied using single-molecule force spectroscopy, and its dependence on the distance between surfaces and equilibration time was probed. The number of bridges formed decreases as the gap width increases, from approximately 2 bridges per 14 s equilibration at separations of 5-15 nm to approximately 0.5 bridges per 14 s equilibration at separations of 35-45 nm. The kinetics of bridge formation appear to be slightly faster at smaller separations.

Full Text

Duke Authors

Cited Authors

  • Serpe, MJ; Rivera, M; Kersey, FR; Clark, RL; Craig, SL

Published Date

  • May 2008

Published In

Volume / Issue

  • 24 / 9

Start / End Page

  • 4738 - 4742

PubMed ID

  • 18348580

Electronic International Standard Serial Number (EISSN)

  • 1520-5827

International Standard Serial Number (ISSN)

  • 0743-7463

Digital Object Identifier (DOI)

  • 10.1021/la703418w


  • eng