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This research focuses on the development of dynamic surfaces and the behavior of nanoscale structures, particularly through Atomic Force Microscopy (AFM) imaging of aminoundecanethiol nanografted within octadecanethiol matrices. Achieving spatial resolution down to 10 nm, we explore cyclic voltammetry of ferrocene thiol self-assembled monolayers (SAMs) exhibiting oxidation behavior. The study addresses reversible boronate interactions with catechols, fluorescence intensity modulation, and the oxidation of catechol to o-benzoquinone. We also present GaSe nanoparticles on Au(111) with tunable aggregation states via surface ligands.
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Dynamic Surfaces and Directional Nanoscale MotionTao Ye, School of Natural Sciences, University of California Merced AFM image of aminoundecanethiol (squares) nanografted in a matrix of octadecanethiol. Spatial resolution as good as 10 nm has been achieved. Cyclic voltammogram of ferrocene thiol SAM. Upon oxidation, the SAM becomes positively charged. However, the ferrocenium groups undergo partial decomposition within 10 min. Patterned electroactive surfaces Reversible boronate formation between 1 and substituted catechols in MeOH. Upon binding the fluorescence intensity of 1 is reduced. The reversible oxidation of catechol to o-benzoquinone is also shown. (Lu et al., Chemical Communications 2009, 5491-5495.) Nanostructures with tunable chemical functionality Next step: integration AFM image of disc like GaSe nanoparticles deposited on Au(111). The particles are oriented and their aggregate states can be controlled by the surface ligands. Shao et al.,submitted.
