scholarly journals Systematic experimental study of quantum interference effects in anthraquinoid molecular wires

2019 ◽  
Vol 1 (5) ◽  
pp. 2018-2028 ◽  
Author(s):  
Marco Carlotti ◽  
Saurabh Soni ◽  
Xinkai Qiu ◽  
Eric Sauter ◽  
Michael Zharnikov ◽  
...  
Keyword(s):  
Experimental Study ◽  
Structure Function ◽  
Quantum Interference ◽  
Electronic Devices ◽  
Molecular Wires ◽  
Design Principles ◽  
Device Fabrication ◽  
Molecular Properties ◽  
Interference Effects ◽  
Molecular Electronic

In order to translate molecular properties in molecular-electronic devices, it is necessary to create design principles that can be used to achieve better structure–function control oriented toward device fabrication.

scholarly journals Correction: Systematic experimental study of quantum interference effects in anthraquinoid molecular wires

2019 ◽  
Vol 1 (5) ◽  
pp. 2040-2040
Author(s):  
Marco Carlotti ◽  
Saurabh Soni ◽  
Xinkai Qiu ◽  
Yong Ai ◽  
Eric Sauter ◽  
...  
Keyword(s):  
Experimental Study ◽  
Quantum Interference ◽  
Molecular Wires ◽  
Interference Effects

Correction for ‘Systematic experimental study of quantum interference effects in anthraquinoid molecular wires’ by Marco Carlotti et al., Nanoscale Adv., 2019, DOI: 10.1039/c8na00223a.

Single Molecule-Based Electronic Devices: A Review

NANO ◽  
2019 ◽  
Vol 14 (11) ◽  
pp. 1930007 ◽  
Author(s):  
Bingrun Chen ◽  
Ke Xu
Keyword(s):  
Single Molecule ◽  
Electronic Device ◽  
Field Effect Transistors ◽  
Electronic Devices ◽  
Differential Resistance ◽  
Molecular Wires ◽  
Molecular Electronic ◽  
Thermoelectric Effects ◽  
Thermally Induced ◽  
Molecular Electronic Devices

In the face of the fact that the development of traditional silicon-based electronic devices is increasingly limited, single molecule electronic device, which has been attracting more and more attention, is considered as one of the most hopeful candidates to realize the miniaturization of conventional electronic devices. In this paper, an overview of single molecule electronic devices is provided, including molecular electronic devices and electrode types. First, several molecular electronic devices are presented, including molecular diodes, molecular memories, molecular wires, molecular field effect transistors (FET) and molecular switches. Then the influence of different electrode types of the transport characteristics is introduced, showing that graphene is a promising electrode material for single molecule electronic devices. Moreover, other excellent characteristics of molecular devices are briefly introduced, such as potential thermoelectric effects, new thermally induced spin transport phenomena and negative differential resistance (NDR) behavior. Finally, the future challenges to the development of electronic devices based on single molecules are described.

Environmental Effects on the Single Molecule Conductance of bis(thiahexyl)oligothiophenes

2009 ◽  
Vol 1154 ◽  
Author(s):  
Edmund Leary ◽  
Horst Höbenreich ◽  
Simon J. Higgins ◽  
Harm van Zalinge ◽  
Wolfgang Haiss ◽  
...  
Keyword(s):  
Electron Transport ◽  
Single Molecule ◽  
Environmental Effects ◽  
Electronic Devices ◽  
Molecular Wires ◽  
Water Molecules ◽  
Ambient Water ◽  
Molecular Electronic ◽  
Molecular Conductance ◽  
Non Equilibrium Green’S Function

AbstractSimple alkanedithiols exhibit the same molecular conductance whether measured in air, under vacuum or under liquids of different polarity. Here, we show that the presence of water ‘gates’ the conductance of a family of oligothiophene–containing molecular wires, and that the longer the oligothiophene, the larger is the effect; for the longest example studied, the molecular conductance is over two orders of magnitude larger in the presence of water, an unprecedented result suggesting that ambient water is a crucial factor to be taken into account when measuring single molecule conductances (SMC), or in the design of future molecular electronic devices. Theoretical investigation of electron transport through the molecules, using the ab initio non-equilibrium Green's function (SMEAGOL) method, shows that water molecules interact with the thiophene rings, shifting the transport resonances enough to increase greatly the SMC of the longer, more conjugated examples.

Solid-Phase Synthesis of Potential Molecular Wires. Attachment of Molecular Alligator Clips

1995 ◽  
Vol 413 ◽  
Author(s):  
LeRoy Jones ◽  
James M. Tour
Keyword(s):  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Electronic Devices ◽  
Molecular Wires ◽  
Solution Phase ◽  
Molecular Electronic ◽  
Phase Synthesis ◽  
Solution Phase Synthesis ◽  
End Groups ◽  
Convergent Approach

ABSTRACTDescribed is the solid-phase and solution-phase synthesis of oligo(2-dodecylphenyleneethynylene) s via an iterative divergent/convergent approach. Synthesized were the monomer, dimer, tetramer, octamer and 16-mer of the oligo(2-dodecylphenylene-thynylene)s. The synthetic protocol for the synthesis and attachment of protected thiol-containing end groups is also described which may serve as molecular alligator clips for adhesion to gold surfaces. These oligomers may act as molecular wires in molecular electronic devices.

Chemical self-assembly strategies for designing molecular electronic circuits

2019 ◽  
Vol 55 (92) ◽  
pp. 13872-13875 ◽  
Author(s):  
Dustin Olson ◽  
Alejandro Boscoboinik ◽  
Wilfred T. Tysoe
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
Molecular Wires ◽  
Design Principles ◽  
Electronic Circuits ◽  
Molecular Electronic

Design principles are demonstrated for fabricating molecular electronic circuits using the inherently self-limiting growth of molecular wires between gold nanoparticles from the oligomerization of 1,4-phenylene diisocyanide.

scholarly journals Controlling Quantum Interference by Regulating Charge on the Bridging N Atom of Pyrrolodipyridine Molecular Junctions

2019 ◽  
Author(s):  
Saman Naghibi ◽  
Ali K. Ismael ◽  
Andrea Vezzoli ◽  
Mohsin K. Al-Khaykanee ◽  
Xijia Zheng ◽  
...  
Keyword(s):  
Quantum Interference ◽  
Molecular Wires ◽  
Molecular Junctions ◽  
Scanning Probe ◽  
Molecular Wire ◽  
Interference Effects ◽  
Electronic Density ◽  
Molecular Conductance

<b>Control of quantum interference features</b>: molecular junctions incorporating pyrrolodipyridine-based molecular wires were fabricated by scanning probe methods. Quantum interference effects were introduced by employing <i>meta</i>-connected molecules, and modulated in magnitude by changing the substituent on the pyrrolic N. Dramatic changes in molecular conductance and DFT transport calculations demonstrate the storng effect that small changes in electronic density can have on the overall conductance of a molecular wire.

scholarly journals Controlling Quantum Interference by Regulating Charge on the Bridging N Atom of Pyrrolodipyridine Molecular Junctions

2019 ◽  
Author(s):  
Saman Naghibi ◽  
Ali K. Ismael ◽  
Andrea Vezzoli ◽  
Mohsin K. Al-Khaykanee ◽  
Xijia Zheng ◽  
...  
Keyword(s):  
Quantum Interference ◽  
Molecular Wires ◽  
Molecular Junctions ◽  
Scanning Probe ◽  
Molecular Wire ◽  
Interference Effects ◽  
Electronic Density ◽  
Molecular Conductance

<b>Control of quantum interference features</b>: molecular junctions incorporating pyrrolodipyridine-based molecular wires were fabricated by scanning probe methods. Quantum interference effects were introduced by employing <i>meta</i>-connected molecules, and modulated in magnitude by changing the substituent on the pyrrolic N. Dramatic changes in molecular conductance and DFT transport calculations demonstrate the storng effect that small changes in electronic density can have on the overall conductance of a molecular wire.

30-nm-Scale Device Fabrication for Electron Transport Studies

1986 ◽  
Vol 76 ◽  
Author(s):  
M. J. Rooks ◽  
P. Mceuen ◽  
S. Wind ◽  
D. E. Prober
Keyword(s):  
Quantum Interference ◽  
Electrical Contact ◽  
Coherence Time ◽  
Device Fabrication ◽  
Interference Effects ◽  
Metallic Structures ◽  
Transport Studies ◽  
Exposure Method ◽  
Deep Ultraviolet ◽  
Multilayer Resist

ABSTRACTThe study of quantum interference effects in metallic structures requires the lithographic resolution of electron-beam lithography. Resolution and reproducibility can be greatly enhanced by the use of a multilayer resist. We have implemented a polymethylmethacrylate (PMMA) bilayer resist which avoids the typical problem of intermixing of the layers. This is accomplished by an expedient choice of the solvent, xylene, for the upper resist layer. Metal lines 30 nm wide have been fabricated. We also describe an additional deep ultraviolet (DUV) exposure method which facilitates making electrical contact to these ultrasmall structures. Quantum interference, localization effects, and the electron phase-coherence time have been studied.

Carbon Nanotubes: Molecular Electronic Devices and Interconnects

1998 ◽  
Vol 514 ◽  
Author(s):  
Deepak Srivastava ◽  
Madhu Menon
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Devices ◽  
Tight Binding ◽  
Building Blocks ◽  
Molecular Wires ◽  
Single Wall Carbon Nanotubes ◽  
Molecular Electronic ◽  
Structural And Electronic Properties ◽  
Barrier Type ◽  
P Type

ABSTRACTThe carbon nanotubes and carbon nanobtube junctions have recently emerged as excellent candidates for use as the building blocks in the formation of nanoscale electronic devices. Single wall carbon nanotubes, as molecular wires, could be used as nanoscale interconnects, where as complex junctions of nanotubes of different chirality can be used as rectifying and transiting devices. It has been shown that pentagon-heptagon defect is responsible for the creation of simple hetero-junctions. Complex junctions, such as 3-termianl T-junctions and Y-junctions require entirely different arrangement of defects. These 3-terminal junctions form prototypes of nanoscale tunnel devices made entirely of carbon. Furthermore, either n-type or p-type doping of the semiconducting portion of these complex junctions should yield Schottky barrier type devices. We also investigate simple wires and junctions of boron and nitrogen (III-V elements) and compare with those of carbon. The structural and electronic properties on nanotubes and nanotube junctions (carbon as well as BN) are studied using a generalized tight-binding molecular dynamics (GTBMD) scheme.

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