Recent progress in the development of molecular-scale electronics based on photoswitchable molecules

Huang, Xin; Li, Tao

doi:10.1039/c9tc06054e

Cited by 133 publications

(104 citation statements)

References 232 publications

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“…Figure 3d shows the electrical current for junctions of Figure 3a,b for different bias voltages at room temperature. Clearly, a large on/off ratio of > 1000 is accessible at Vb > 0.45 V. This is higher than the on/off ratio of dithienylethene, azobenzene, and stilbene photochromic molecules studied between gold or graphene electrodes [10,11,15,33] and is a consequence of crossover from DQI to CQI in phenoxyquinone molecules. This large variation in the electrical conductance is due to a crossover from conjugated cisphenoxyquinone to cross conjugated trans-phenoxyquinone.…”

Section: Resultsmentioning

confidence: 87%

“…In particular, understanding the influence of light on properties of single molecular-scale devices can have applications on better characterization of the molecular junctions e.g., Raman spectroscopy or used as an alternative to a molecular scale field effect transistor [4][5][6]. In single molecule optoelectronics, one of the main motivations is to switch electrical conductance on and off using an external stimulus such as an external electric field [7,8], redox chemistry [9], or light [4,5,10,11]. In the latter, the electrical current is switched reversibly on and off in photochromic molecules in the presence of light or a change in its intensity.…”

Section: Introductionmentioning

confidence: 99%

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Switching Quantum Interference in Phenoxyquinone Single Molecule Junction with Light

2020

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Quantum interference (QI) can lead to large variations in single molecule conductance. However, controlling QI using external stimuli is challenging. The molecular structure of phenoxyquinone can be tuned reversibly using light stimulus. In this paper, we show that this can be utilized to control QI in phenoxyquinone derivatives. Our calculations indicate that, as a result of such variation in molecular structure of phenoxyquinone, a crossover from destructive to constructive QI is induced. This leads to a significant variation in the single molecule conductance by a couple of orders of magnitude. This control of QI using light is a new paradigm in photosensitive single molecule switches and opens new avenues for future QI-based photoswitches.

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Section: Resultsmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Switching Quantum Interference in Phenoxyquinone Single Molecule Junction with Light

2020

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“…Molecular implementations of this should be possible in the near future for the case of electronic conduction output of photochromic units under various stimulations. 101,102,246 Section 7 mentioned related 212 This fundamental idea is now realized with DNA devices 247 based on toehold-mediated strand exchange. 135 Fig.…”

Section: Msde Reviewmentioning

confidence: 99%

Supra-molecular agents running tasks intelligently (SMARTI): recent developments in molecular logic-based computation

Yao

Lin

Crory

et al. 2020

Mol. Syst. Des. Eng.

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“…This result opens the door to the exploration of new functionalities taking advantage of the lateral supramolecular organization of the molecules in SAMs. Whilst, the incorporation of photochromic moieties to fabricate switching molecular electronics devices, where it is possible to control the on/off state by external stimuli, is also a topic of interest [201].…”

mentioning

confidence: 99%

Nanofabrication Techniques in Large-Area Molecular Electronic Devices

2020

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The societal impact of the electronics industry is enormous—not to mention how this industry impinges on the global economy. The foreseen limits of the current technology—technical, economic, and sustainability issues—open the door to the search for successor technologies. In this context, molecular electronics has emerged as a promising candidate that, at least in the short-term, will not likely replace our silicon-based electronics, but improve its performance through a nascent hybrid technology. Such technology will take advantage of both the small dimensions of the molecules and new functionalities resulting from the quantum effects that govern the properties at the molecular scale. An optimization of interface engineering and integration of molecules to form densely integrated individually addressable arrays of molecules are two crucial aspects in the molecular electronics field. These challenges should be met to establish the bridge between organic functional materials and hard electronics required for the incorporation of such hybrid technology in the market. In this review, the most advanced methods for fabricating large-area molecular electronic devices are presented, highlighting their advantages and limitations. Special emphasis is focused on bottom-up methodologies for the fabrication of well-ordered and tightly-packed monolayers onto the bottom electrode, followed by a description of the top-contact deposition methods so far used.

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Recent progress in the development of molecular-scale electronics based on photoswitchable molecules

Abstract: Recent advances in photoswitchable molecular devices based on single molecules or self-assembled monolayers of photochromic molecules are summarized and discussed.

Cited by 133 publications

References 232 publications

Switching Quantum Interference in Phenoxyquinone Single Molecule Junction with Light

Switching Quantum Interference in Phenoxyquinone Single Molecule Junction with Light

Supra-molecular agents running tasks intelligently (SMARTI): recent developments in molecular logic-based computation

Nanofabrication Techniques in Large-Area Molecular Electronic Devices

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