title: Molecular logic gates using surface-enhanced Raman-scattered light.
abstract: A voltage-activated molecular-plasmonics device was created to demonstrate molecular logic based on resonant surface-enhanced Raman scattering (SERS). SERS output was achieved by a combination of chromophore-plasmon coupling and surface adsorption at the interface between a solution and a gold nanodisc array. The chromophore was created by the self-assembly of a supramolecular complex with a redox-active guest molecule. The guest was reversibly oxidized at the gold surface to the +1 and +2 oxidation states, revealing spectra that were reproduced by calculations. State-specific SERS features enabled the demonstration of a multigate logic device with electronic input and optical output.
authors.affiliation: Chemistry Department, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, USA.
authors.forename: Edward H
authors.initials: EH
authors.lastname: Witlicki
authors.forename: Carsten
authors.initials: C
authors.lastname: Johnsen
authors.forename: Stinne W
authors.initials: SW
authors.lastname: Hansen
authors.forename: Daniel W
authors.initials: DW
authors.lastname: Silverstein
authors.forename: Vincent J
authors.initials: VJ
authors.lastname: Bottomley
authors.forename: Jan O
authors.initials: JO
authors.lastname: Jeppesen
authors.forename: Eric W
authors.initials: EW
authors.lastname: Wong
authors.forename: Lasse
authors.initials: L
authors.lastname: Jensen
authors.forename: Amar H
authors.initials: AH
authors.lastname: Flood