Reversible Conductance Switching in Molecular Devices

Kronemeijer, Auke Jisk; Akkerman, Hylke B.; Kudernác, Tibor; Wees, B. J. van; Feringa, Ben L.; Blom, Paul W. M.; Boer, Bart de

doi:10.1002/adma.200800053

Cited by 245 publications

(267 citation statements)

References 35 publications

Supporting

Mentioning

256

Contrasting

Order By: Relevance

“…50 Diarylethenes already play an important role as current controlling elements sandwiched between metal surfaces. 4,10 This application allowed the design of devices where a single, or a few, molecules can switch the electrical current on and off in metal nanowires. 4,10 That design met significant difficulties in the quenching of the photochemical reaction by the metal surface which was overcome recently by means of experimental design.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical and Photochemical Cyclization and Cycloreversion of Diarylethenes and Diarylethene-Capped Sexithiophene Wires

et al. 2011

Self Cite

View full text Add to dashboard Cite

A combined theoretical and experimental study was performed on diarylethenes and diarylethene-capped sexithiophenes aiming at an improved understanding of the electrochemical and photochemical ring-opening and ring-closing mechanisms. Theoretical calculations, based on DFT and TDDFT, suggested that the spatial distribution and the occupancy of the frontier orbitals determine and control the diarylethenes’ ring-opening and ring-closing upon photoirradiation and electrochemical oxidation. Optimized geometries, potential energy surfaces, and activation energies between the open-ring and closed-ring forms were calculated for diarylethenes in the neutral ground state, excited states, and mono- and dicationic states. Analysis of the frontier orbitals was employed to understand the cyclization and cycloreversion of diarylethenes and to predict and explain the switching properties of diarylethene-capped sexithiophene molecular wires. The TDDFT data were verified with experimentally measured UV/vis spectra. The DFT calculations estimated open-shell ground states of diarylethene-capped sexithiophene dications, which were verified with EPR spectroscopy, and the broadening of the peaks in the EPR spectra were explained with the calculated singlet−triplet splitting. The good agreement of experiment and theory allows for the understanding of switching behavior of diarylethenes in solutions, in metal break junctions, in monolayers on metal surfaces, and as a part of complex organic molecular wires.

show abstract

Section: Resultsmentioning

confidence: 99%

Electrochemical and Photochemical Cyclization and Cycloreversion of Diarylethenes and Diarylethene-Capped Sexithiophene Wires

et al. 2011

Self Cite

View full text Add to dashboard Cite

show abstract

“…Reversible photoswitching devices were demonstrated with diarylethene and azobenzene derivatives [131,132], and open the route for potential applications as optical switches in molecular electronics [133][134][135][136][137][138]. For instance, azobenzene molecules show a transition from a more thermodynamically stable trans configuration to a cis configuration upon exposure to UV light (~ 360 nm), and a reversible isomerization under blue light (~ 480 nm).…”

Section: B Configurational Switch and Memorymentioning

confidence: 99%

Molecular Nanoelectronics

Vuillaume

2010

Proc. IEEE

View full text Add to dashboard Cite

Abstract-Molecular electronics is envisioned as a promising candidate for the nanoelectronics of the future. More than a possible answer to ultimate miniaturization problem in nanoelectronics, molecular electronics is foreseen as a possible way to assemble a large numbers of nanoscale objects (molecules, nanoparticules, nanotubes and nanowires) to form new devices and circuit architectures. It is also an interesting approach to significantly reduce the fabrication costs, as well as the energetical costs of computation, compared to usual semiconductor technologies. Moreover, molecular electronics is a field with a large spectrum of investigations: from quantum objects for testing new paradigms, to hybrid molecular-silicon CMOS devices. However, problems remain to be solved (e.g. a better control of the molecule-electrode interfaces, improvements of the reproducibility and reliability, etc…).

show abstract

“…Modifying metal electrodes with self-assembled monolayers (SAMs) has a variety of applications in the fields of both organic electronics and molecular electronics [1][2][3][4][5][6]. Considerable experimental efforts have been made in order to obtain promising SAMs with expected properties to improve device performances [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Interface electronic structures of reversible double-docking self-assembled monolayers on an Au(111) surface

Zhang

Wang

et al. 2014

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

Double-docking self-assembled monolayers (DDSAMs), namely self-assembled monolayers (SAMs) formed by molecules possessing two docking groups, provide great flexibility to tune the work function of metal electrodes and the tunnelling barrier between metal electrodes and the SAMs, and thus offer promising applications in both organic and molecular electronics. Based on the dispersion-corrected density functional theory (DFT) in comparison with conventional DFT, we carry out a systematic investigation on the dual configurations of a series of DDSAMs on an Au(111) surface. Through analysing the interface electronic structures, we obtain the relationship between single molecular properties and the SAM-induced work-function modification as well as the level alignment between the metal Fermi level and molecular frontier states. The two possible conformations of one type of DDSAM on a metal surface reveal a strong difference in the work-function modification and the electron/hole tunnelling barriers. Fermi-level pinning is found to be a key factor to understand the interface electronic properties.

show abstract

Reversible Conductance Switching in Molecular Devices

Cited by 245 publications

References 35 publications

Electrochemical and Photochemical Cyclization and Cycloreversion of Diarylethenes and Diarylethene-Capped Sexithiophene Wires

Electrochemical and Photochemical Cyclization and Cycloreversion of Diarylethenes and Diarylethene-Capped Sexithiophene Wires

Molecular Nanoelectronics

Interface electronic structures of reversible double-docking self-assembled monolayers on an Au(111) surface

Contact Info

Product

Resources

About