Molecule motion at polymer brush interfaces from single-molecule experimental perspectives

Resolving metal-molecule interfaces at single-molecule junctions

Electronic and structural detail at the electrode-molecule interface have a significant influence on charge transport across molecular junctions. Despite the decisive role of the metal-molecule interface, a complete electronic and structural characterization of the interface remains a challenge. This is in no small part due to current experimental limitations. Here, we present a comprehensive a...

Model systems for single molecule polymer dynamics.

Double stranded DNA (dsDNA) has long served as a model system for single molecule polymer dynamics. However, dsDNA is a semiflexible polymer, and the structural rigidity of the DNA double helix gives rise to local molecular properties and chain dynamics that differ from flexible chains, including synthetic organic polymers. Recently, we developed single stranded DNA (ssDNA) as a new model syste...

Dendronized polymer is a Single Molecule Glass

Submitted for the MAR05 Meeting of The American Physical Society Dendronized polymer is a Single Molecule Glass JAYAJIT DAS, Dept. of Chemical Engr., UC Berkeley, YOSHIDA MASARU, ZACHARY FRESCO, TAE-LIM CHOI, JEAN FRECHET, Dept. of Chemistry, UC Berkeley, ARUP CHAKRABORTY, Dept. of Chemical Engr., UC Berkeley — The molecular architecture of dendronized polymers can be tuned to obtain nanoscale ...

Single-molecule tracking of polymer surface diffusion.

The dynamics of polymers adsorbed to a solid surface are important in thin-film formation, adhesion phenomena, and biosensing applications, but they are still poorly understood. Here we present tracking data that follow the dynamics of isolated poly(ethylene glycol) chains adsorbed at a hydrophobic solid-liquid interface. We found that molecules moved on the surface via a continuous-time random...

Single Molecule Dynamics at Surfaces