Light-Controlled Conductance Switching of Ordered Metal−Molecule−Metal Devices

Molen, Sense Jan van der; Liao, Jianhui; Kudernác, Tibor; Agustsson, J. S.; Bernard, Laetitia; Calame, Michel; Wees, B. J. van; Feringa, Ben L.; Schönenberger, Christian

doi:10.1021/nl802487j

Cited by 308 publications

(278 citation statements)

References 34 publications

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“…These nanoparticles and nematic liq- Unlike the analog with a thiophene linker [151] metaphenyl-linked diarylethene of this type exhibits lightcontrolled reversible conduction on the gold surface [152]. Using independent optical control experiments, a one-toone relationship between molecular photoisomerization and conduction switching was revealed [153]. A photoswitching of the conduction of diarylethene-Au nanoparticle network [154] and switching of the tunneling current of a single diarylethene molecule on the gold surface [155] were demonstrated.…”

Section: Scheme 99mentioning

confidence: 98%

Nanophotochromism

Barachevsky¹

2015

Organic Photonics and Photovoltaics

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Abstract:The review presents the state-of-the-art analysis of investigations in the field of a new line of research of photochromism -nanophotochromism. The design, properties, and possible applications of photochromic nanoparticles prepared by different methods with the use of photochromic substances (aggregates, host-guest, and polymer systems, solid nanoparticles) as well as core-shell photochromic nanostructures based on polymers, silica, quantum dots, doped upconversion nanocrystals, and Ag, Au, etc. nanoparticles have been reviewed. Keywords: photochromism; photochromic nanoparticles; core-shell photochromic nanoparticles design; photoswitching; aggregates; polymer systems, host-guest systems IntroductionPhotochromism is a very important phenomenon for different applications in photonics. The applications are based on reversible phototransformations of photochromic compounds between two states and changes of their properties that accompany these transformations At present, systems and materials containing photochromic nanopatricles have become highly significant. Among these are nanodimensional particles of photochromic substances, including aggregates, and coreshell systems. As a core, inorganic nanoparticles of gold, silver, metal oxides, quantum dots (QD), and also polymeric nanoparticles are used. The shell consists of photochromic molecules or their aggregates connected to a core surface either chemically or physically. Photochromic nanoparticles with photocontrolled fluorescence arouse a special interest because the fluorescence technique is becoming a leading strategy in biological diagnosis, imaging, and detection applications. This paper is a state-of-the-art review which presents results of studying photochromic nanoparticles including author's own data. The results of earlier research are also surveyed in some other reviews [1][2][3][4][5][6][7][8][9][10][11][12][13]. Photochromic nanoparticles:properties and applications Nanoparticles based on photochromic substances AggregatesThe most known photochromic nanoparticles are aggregates of photochromic organic compounds [14]. These compounds experience reversible photoinduced transformations between two states, Sch. 1A and Sch. 1B. Scheme 1The photoinduced colored merocyanine form B absorbing visible irradiation is formed from a colorless form A as a result of photodissociation of the -C-O-bond of the pyran heterocycle under UV radiation, and this is followed by spontaneous isomerization of the cis-form to the trans one. The colored form B can be converted back to the initial colorless form A upon absorption of visible light or spontaneously during the dark relaxation, which is accelerated by heating.The J-aggregates of nitro-substituted indoline spiropyrans Sch. 2 with long alkyl substituents are of special interest [15].The narrow absorption bands of J-aggregates of these photochromic compounds (Fig. 1) made it possible prepare a specimen of the multilayered optical disk providing freUnauthenticated Download

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Section: Scheme 99mentioning

confidence: 98%

Nanophotochromism

Barachevsky¹

2015

Organic Photonics and Photovoltaics

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“…Fortunately, it may also be possible to test our model using molecular switches. 18 Diarylethylene based switches, for example, do not only change their total transmission but also the position of the resonances. 19 Our predictions could be examined on nanoparticle arrays interlinked by molecular bridges, but this would also require our model to include percolation effects.…”

Section: Approach 1: Lorentzian Transmissionmentioning

confidence: 99%

Inelastic cotunneling with energy-dependent contact transmission

Blok

Mojarro

Maduro

et al. 2017

The Journal of Chemical Physics

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Destructive quantum interference in electron transport: A reconciliation of the molecular orbital and the atomic orbital perspective The Journal of Chemical Physics 146, 092308092308 (2016) We investigate inelastic cotunneling in a model system where the charging island is connected to the leads through molecules with energy-dependent transmission functions. To study this problem, we propose two different approaches. The first is a pragmatic approach that assumes Lorentzian-like transmission functions that determine the transmission probability to the island. Using this model, we calculate current versus voltage (IV) curves for increasing resonance level positions of the molecule. We find that shifting the resonance energy of the molecule away from the Fermi energy of the contacts leads to a decreased current at low bias, but as bias increases, this difference decreases and eventually inverses. This is markedly different from IV behavior outside the cotunneling regime. The second approach involves multiple cotunneling where also the molecules are considered to be in the Coulomb blockade regime. We find here that when E c eV, k B T , the IV behavior approaches the original cotunneling behavior proposed by Averin and Nazarov [Phys. Rev. Lett. 65, 2446-2449 (1990)]. Published by AIP Publishing. [http://dx

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“…Even more pronounced was the resonance peak splitting, revealing two separate peaks at 568 and 604 nm. Such splitting allowed us to demonstrate a molecular photonic coupling, analogous to molecular plasmonic coupling 30,[34][35][36] . However, in the case of finer fibers, photo absorption was observed after exposure to UV light (Figure 4f), which is generally expected from SPO molecules inside of polymer films or solvent environments.…”

Section: Polymermentioning

confidence: 99%

Photoswitchable molecular dipole antennas with tailored coherent coupling in glassy composite

et al. 2015

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Here, we introduce the first experimental proof of coherent oscillation and coupling of photoswitchable molecules embedded randomly in a polymeric matrix and acting cooperatively upon illumination with UV light. In particular, we demonstrate the specular reflection and Brewster phenomenon alteration of photochromic molecular dipole antennas. We successfully demonstrate the concept of Brewster wavelength, which is based on the dipolar interaction between radiating dipoles and the surrounding matrix possessing a net dipole moment, as a key tool for highly localized sensing of matrix polarity. We also introduce the concept of 'tailored molecular photonic coupling' while highlighting the role of interferences for the design of optically active media by adjusting the photonic response of the medium with the real and imaginary refractive index of photoswitchable molecules in the 'ON' state. Our results enhance our fundamental understanding of coherent dipole radiation and open a new vein of research based on glassy disordered dipolar composites that act as macroscopic antenna with cooperative action; furthermore, these results have important implications for new design rules of tailored photonics.

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Light-Controlled Conductance Switching of Ordered Metal−Molecule−Metal Devices

Abstract: Link to publication in University of Groningen/UMCG research database Citation for published version (APA): Molen, S.

Cited by 308 publications

References 34 publications

Nanophotochromism

Nanophotochromism

Inelastic cotunneling with energy-dependent contact transmission

Photoswitchable molecular dipole antennas with tailored coherent coupling in glassy composite

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