Surface-Enhanced Raman Spectroelectrochemistry of TTF-Modified Self-Assembled Monolayers.
Walter F. Paxton,Samuel L. Kleinman,Ashish N. Basuray,J. Fraser Stoddart,Richard P. Van Duyne +4 more
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Surface-enhanced Raman spectroscopy was used to monitor the response of a self-assembled monolayer of a tetrathiafulvalene (TTF) derivative on a gold film-over-nanosphere electrode, resulting in surface-enhancing resonance Raman scattering (SERRS).Abstract:
Surface-enhanced Raman spectroscopy (SERS) was used to monitor the response of a self-assembled monolayer (SAM) of a tetrathiafulvalene (TTF) derivative on a gold film-over-nanosphere electrode. The electrochemical response observed was rationalized in terms of the interactions between TTF moieties as the oxidation state was changed. Electrochemical oxidation to form the monocation caused the absorbance of the TTF unit to coincide with both the laser excitation wavelength and the localized surface plasmon resonance (LSPR), resulting in surface-enhanced resonance Raman scattering (SERRS). The vibrational frequency changes that accompany electron transfer afford a high-contrast mechanism that can be used to determine the oxidation state of the TTF unit in an unambiguous manner.read more
Citations
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SERS: Materials, applications, and the future
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Functionalization of Oxide-Free Silicon Surfaces with Redox-Active Assemblies
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A [2]Catenane-Based Solid State Electronically Reconfigurable Switch
C. P. Collier,Gunter Mattersteig,Eric W. Wong,Yi Luo,K. C. Beverly,José Sampaio,Françisco M. Raymo,J. Fraser Stoddart,James R. Heath +8 more
TL;DR: In this paper, a solid state, electronically addressable, bistable [2]catenane-based molecular switching device was fabricated from a single monolayer of the [2]-Catenane, anchored with phospholipid counterions, and sandwiched between an n-type polycrystalline silicon bottom electrode and a metallic top electrode.