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.

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.

Single-Molecule Detection of Proteins Using Aptamer-Functionalized Molecular Electronic Devices

2011 ◽  
Vol 123 (11) ◽  
pp. 2544-2550 ◽  
Author(s):  
Song Liu ◽  
Xinyue Zhang ◽  
Wangxi Luo ◽  
Zhenxing Wang ◽  
Xuefeng Guo ◽  
...  
Keyword(s):  
Single Molecule ◽  
Electronic Devices ◽  
Single Molecule Detection ◽  
Molecular Electronic ◽  
Molecular Electronic Devices

Engineering the Electron Transport of Silicon-Based Molecular Electronic Devices via Molecular Dipoles

2010 ◽  
Vol 114 (49) ◽  
pp. 21708-21714 ◽  
Author(s):  
Nadine Gergel-Hackett ◽  
Izath Aguilar ◽  
Curt A. Richter
Keyword(s):  
Electron Transport ◽  
Electronic Devices ◽  
Molecular Electronic ◽  
Silicon Based ◽  
Molecular Electronic Devices

scholarly journals Single molecule vs. large area design of molecular electronic devices incorporating an efficient 2-aminepyridine double anchoring group

Nanoscale ◽  
2019 ◽  
Vol 11 (34) ◽  
pp. 15871-15880 ◽  
Author(s):  
L. Herrer ◽  
A. Ismael ◽  
S. Martín ◽  
D. C. Milan ◽  
J. L. Serrano ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Single Molecule ◽  
Electronic Devices ◽  
Large Area ◽  
Molecular Electronic ◽  
Single Molecule Level ◽  
Order Of Magnitude ◽  
Anchoring Group ◽  
Molecular Skeleton ◽  
Molecular Electronic Devices

The electrical properties of a bidentate molecule in both large area devices and at the single molecule level have been explored and exhibit a conductance one order of magnitude higher than that of monodentate materials with same molecular skeleton.

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.

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.

Single-Molecule Detection of Proteins Using Aptamer-Functionalized Molecular Electronic Devices

2011 ◽  
Vol 50 (11) ◽  
pp. 2496-2502 ◽  
Author(s):  
Song Liu ◽  
Xinyue Zhang ◽  
Wangxi Luo ◽  
Zhenxing Wang ◽  
Xuefeng Guo ◽  
...  
Keyword(s):  
Single Molecule ◽  
Electronic Devices ◽  
Single Molecule Detection ◽  
Molecular Electronic ◽  
Molecular Electronic Devices
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