Light driven reactions of single physisorbed azobenzenes

Bazarnik, Maciej; Henzl, Jörg; Czajka, Ryszard; Morgenstern, Karina

doi:10.1039/c1cc11578b

Cited by 37 publications

(41 citation statements)

References 19 publications

(32 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The isomerization was not always reversible, though the reason is still unknown . These reactions are possible within supramolecular layers and for physisorbed molecules both on metals and on NaCl layers .…”

Section: Manipulation Employing the Electron Currentmentioning

confidence: 98%

Controlled manipulation of single atoms and small molecules using the scanning tunnelling microscope

Morgenstern

Lorente

Rieder

2013

Phys. Status Solidi B

Self Cite

108

View full text Add to dashboard Cite

This article reviews manipulation of single molecules by scanning tunnelling microscopes, in particular vertical manipulation, lateral manipulation, and inelastic electron tunnelling (IET) manipulation. For a better understanding of these processes, we shortly review imaging by scanning tunnelling microscopy – as a prerequisite to detect the manipulated species and to verify the result of the manipulation – as well as scanning tunnelling spectroscopy and IET spectroscopy which are used to chemically identify the molecules before and after the manipulation that employs the tunnelling current.

show abstract

Section: Manipulation Employing the Electron Currentmentioning

confidence: 98%

Controlled manipulation of single atoms and small molecules using the scanning tunnelling microscope

Morgenstern

Lorente

Rieder

2013

Phys. Status Solidi B

Self Cite

108

View full text Add to dashboard Cite

show abstract

“…This loss of functionality is frequently ascribed to the emergence of efficient de-excitation pathways due to electronic coupling to the metal, or to a strong interaction between the highly polarizable electronic system of the phenyl rings and the substrate due to van der Waals forces. On the other hand, there are also examples of adsorbed photoswitches with intact (or restored) isomerization capability in direct contact with a metal, semi-metal or semiconductor surface [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Photo-induced and thermal reactions in thin films of an azobenzene derivative on Bi(111)

Bronner

Tegeder

2014

New J. Phys.

View full text Add to dashboard Cite

Azobenzene is a prototypical molecular switch which can be interconverted with UV and visible light between a trans and a cis isomer in solution. While the ability to control their conformation with light is lost for many molecular photoswitches in the adsorbed state, there are some examples for successful photoisomerization in direct contact with a surface. However, there the process is often driven by a different mechanism than in solution. For instance, photoisomerization of a cyano-substituted azobenzene directly adsorbed on Bi(111) occurs via electronic excitations in the substrate and subsequent charge transfer.In the present study we observe two substrate-mediated trans-cis photoisomerization reactions of the same azobenzene derivative in two different environments within a multilayer thin film on Bi(111). Both processes are associated with photoisomerization and one is around two orders of magnitude more efficient than the other. Furthermore, the cis isomers perform a thermally induced reaction which may be ascribed to a back-isomerization in the electronic ground state or to a phenyl ring rotation of the cis isomer.Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. New J. Phys. 16 (2014) 053004 C Bronner and P Tegeder New J. Phys. 16 (2014) 053004 C Bronner and P Tegeder 3 New J. Phys. 16 (2014) 053004 C Bronner and P Tegeder 4 New J. Phys. 16 (2014) 053004 C Bronner and P Tegeder 5 New J. Phys. 16 (2014) 053004 C Bronner and P Tegeder 7

show abstract

“…Recently, Bazarnik et al . 15 reported that by trapping molecules in a physisorption well, direct photo-switching of a dye molecule on metallic surfaces becomes possible. External stimuli such as tunnelling current or light are most frequently used to transform molecules from one state to another.…”

mentioning

confidence: 99%

Molecular switches from benzene derivatives adsorbed on metal surfaces

et al. 2013

View full text Add to dashboard Cite

Transient precursor states are often experimentally observed for molecules adsorbing on surfaces. However, such precursor states are typically rather short-lived, quickly yielding to more stable adsorption configurations. Here we employ first-principles calculations to systematically explore the interaction mechanism for benzene derivatives on metal surfaces, enabling us to selectively tune the stability and the barrier between two metastable adsorption states. In particular, in the case of the tetrachloropyrazine molecule, two equally stable adsorption states are identified with a moderate and conceivably reversible barrier between them. We address the feasibility of experimentally detecting the predicted bistable behaviour and discuss its potential usefulness in a molecular switch.

show abstract

Light driven reactions of single physisorbed azobenzenes

Cited by 37 publications

References 19 publications

Controlled manipulation of single atoms and small molecules using the scanning tunnelling microscope

Controlled manipulation of single atoms and small molecules using the scanning tunnelling microscope

Photo-induced and thermal reactions in thin films of an azobenzene derivative on Bi(111)

Molecular switches from benzene derivatives adsorbed on metal surfaces

Contact Info

Product

Resources

About