Journal ArticleDOI
Adsorption and Switching Properties of Azobenzene Derivatives on Different Noble Metal Surfaces: Au(111), Cu(111), and Au(100)
Micol Alemani,Sofia Selvanathan,Francisco Ample,Maike V. Peters,K. H. Rieder,Francesca Moresco,Christian Joachim,Stefan Hecht,Leonhard Grill +8 more
Reads0
Chats0
TLDR
In this article, the adsorption and switching behavior of 3,3′,5,5′-tetra-tert-butylazobenzene (meta-TBA) were investigated by low-temperature scanning tunneling microscopy on three different metal substrates: Au(111), Cu(111, and Au(100).Abstract:
The adsorption and switching behavior of 3,3′,5,5′-tetra-tert-butylazobenzene (meta-TBA) are investigated by low-temperature scanning tunneling microscopy on three different metal substrates: Au(111), Cu(111), and Au(100). The trans state is the most stable configuration after adsorption, displaying similar appearances in the STM images, independent of the substrate. However, the self-assembly and switching behavior is highly dependent on the chemistry and corrugation of the surface. On the Au(111) surface, the tip-induced isomerization is probed successfully and different driving mechanisms are characterized. The experimental images are in good agreement with calculated ones. However, the switching effect is completely suppressed on Cu(111) and Au(100).read more
Citations
More filters
Journal ArticleDOI
Photoswitches: From Molecules to Materials
TL;DR: Moving from supramolecular systems in solution to surfaces and finally to bulk materials, important design concepts are discussed, emphasizing both the challenges as well as the great promise of such truly advanced materials.
Journal ArticleDOI
Electrically driven directional motion of a four-wheeled molecule on a metal surface
Tibor Kudernac,Nopporn Ruangsupapichat,Manfred Parschau,Beatriz Maciá,Nathalie Katsonis,Syuzanna R. Harutyunyan,Karl-Heinz Ernst,Karl-Heinz Ernst,Ben L. Feringa +8 more
TL;DR: This work presents a molecule with four functional units—the authors' previously reported rotary motors—that undergo continuous and defined conformational changes upon sequential electronic and vibrational excitation and provides a starting point for the exploration of more sophisticated molecular mechanical systems with directionally controlled motion.
Journal ArticleDOI
Quantum Chemical Investigation of Thermal Cis-to-Trans Isomerization of Azobenzene Derivatives: Substituent Effects, Solvent Effects, and Comparison to Experimental Data
Jadranka Dokić,Marcel Gothe,Jonas Wirth,Maike V. Peters,Jutta Schwarz,Stefan Hecht,Peter Saalfrank +6 more
TL;DR: Quantum chemical calculations of various azobenzene (AB) derivatives have been carried out with the goal to describe the energetics and kinetics of their thermal cis --> trans isomerization, giving usually reliable activation energies and enthalpies when compared to experimentally determined values.
Journal ArticleDOI
Controlling intramolecular hydrogen transfer in a porphycene molecule with single atoms or molecules located nearby
Takashi Kumagai,Felix Hanke,Felix Hanke,Sylwester Gawinkowski,John Sharp,Konstantinos Kotsis,Jacek Waluk,Mats Persson,Leonhard Grill,Leonhard Grill +9 more
TL;DR: By placing, with atomic precision, a copper adatom close to a porphycene molecule, it is found that the tautomerization rates could be tuned up and down in a controlled fashion, surprisingly also at rather large separations.
Journal ArticleDOI
Spatial periodicity in molecular switching
TL;DR: It is shown that azobenzene derivatives in the trans form, adsorbed in a homogeneous two-dimensional layer, can be collectively switched with spatial selectivity, thus forming a periodic pattern of cis isomers, demonstrating a conceptually new approach to spatially addressing single functional molecules.
References
More filters
Book
Photochromism : molecules and systems
Heinz Dürr,Henri Bouas-Laurent +1 more
TL;DR: In this article, the authors proposed a photochromism based on pericyclic reactions and cycloaddition reactions involving 4n+2 electrons for the purpose of energy storage.
Journal ArticleDOI
Conductance Switching in Single Molecules Through Conformational Changes
Zachary J. Donhauser,Brent A. Mantooth,Kevin F. Kelly,Lloyd A. Bumm,Jason D. Monnell,Joshua J. Stapleton,David W. Price,Adam M. Rawlett,David L. Allara,James M. Tour,Paul S. Weiss +10 more
TL;DR: Over time the conductance switching of single and bundled phenylene ethynylene oligomers isolated in matrices of alkanethiolate monolayers is tracked, concluding that the switching is a result of conformational changes in the molecules or bundles, rather than electrostatic effects of charge transfer.
Journal ArticleDOI
Single-Molecule Optomechanical Cycle
TL;DR: The polymer was found to contract against an external force acting along the polymer backbone, thus delivering mechanical work, demonstrating for the first time optomechanical energy conversion in a single-molecule device.
Journal ArticleDOI
Nanoscale science of single molecules using local probes
TL;DR: In revealing the crucial role of thermal, stochastic, and quantum-tunneling processes, experiments on individual molecules using scanning probe microscopies suggest that dynamics is inescapable and may play a decisive role in the evolution of nanotechnology.
Journal ArticleDOI
Electric field-induced isomerization of azobenzene by STM
Micol Alemani,Maike V. Peters,Stefan Hecht,Karl-Heinz Rieder,Francesca Moresco,Leonhard Grill +5 more
TL;DR: The electric field applied between the tip of a scanning tunneling microscope and a metallic surface is shown to induce the reversible trans-cis isomerization of single azobenzene derivatives adsorbed on a Au(111) surface.
Related Papers (5)
Reversible photomechanical switching of individual engineered molecules at a metallic surface.
Matthew J. Comstock,Matthew J. Comstock,Niv Levy,Niv Levy,Armen Kirakosian,Armen Kirakosian,Jongweon Cho,Jongweon Cho,Frank Lauterwasser,Frank Lauterwasser,Jessica H. Harvey,Jessica H. Harvey,David A. Strubbe,David A. Strubbe,Jean M. J. Fréchet,Jean M. J. Fréchet,Dirk Trauner,Dirk Trauner,Steven G. Louie,Steven G. Louie,Michael F. Crommie,Michael F. Crommie +21 more