Supramolecular Systems and Chemical Reactions in Single-Molecule Break Junctions

2017 ◽  
Vol 375 (2) ◽  
Author(s):  
Xiaohui Li ◽  
Duan Hu ◽  
Zhibing Tan ◽  
Jie Bai ◽  
Zongyuan Xiao ◽  
...  
Keyword(s):  
Chemical Reactions ◽  
Single Molecule ◽  
Supramolecular Systems ◽  
Break Junctions

Supramolecular Systems and Chemical Reactions in Single-Molecule Break Junctions

2017 ◽  
pp. 87-105 ◽  
Author(s):  
Xiaohui Li ◽  
Duan Hu ◽  
Zhibing Tan ◽  
Jie Bai ◽  
Zongyuan Xiao ◽  
...  
Keyword(s):  
Chemical Reactions ◽  
Single Molecule ◽  
Supramolecular Systems ◽  
Break Junctions

Measurement and control of detailed electronic properties in a single molecule break junction

2014 ◽  
Vol 174 ◽  
pp. 91-104 ◽  
Author(s):  
Kun Wang ◽  
Joseph Hamill ◽  
Jianfeng Zhou ◽  
Cunlan Guo ◽  
Bingqian Xu
Keyword(s):  
Data Analysis ◽  
Molecular Electronics ◽  
Single Molecule ◽  
Molecular Orbitals ◽  
Break Junction ◽  
Break Junctions ◽  
Single Molecule Level ◽  
Analysis Techniques ◽  
Future Design ◽  
Molecule Junction

The lack of detailed experimental controls has been one of the major obstacles hindering progress in molecular electronics. While large fluctuations have been occurring in the experimental data, specific details, related mechanisms, and data analysis techniques are in high demand to promote our physical understanding at the single-molecule level. A series of modulations we recently developed, based on traditional scanning probe microscopy break junctions (SPMBJs), have helped to discover significant properties in detail which are hidden in the contact interfaces of a single-molecule break junction (SMBJ). For example, in the past we have shown that the correlated force and conductance changes under the saw tooth modulation and stretch–hold mode of PZT movement revealed inherent differences in the contact geometries of a molecular junction. In this paper, using a bias-modulated SPMBJ and utilizing emerging data analysis techniques, we report on the measurement of the altered alignment of the HOMO of benzene molecules with changing the anchoring group which coupled the molecule to metal electrodes. Further calculations based on Landauer fitting and transition voltage spectroscopy (TVS) demonstrated the effects of modulated bias on the location of the frontier molecular orbitals. Understanding the alignment of the molecular orbitals with the Fermi level of the electrodes is essential for understanding the behaviour of SMBJs and for the future design of more complex devices. With these modulations and analysis techniques, fruitful information has been found about the nature of the metal–molecule junction, providing us insightful clues towards the next step for in-depth study.

Fast sensitive amplifier for two-probe conductance measurements in single molecule break junctions

2017 ◽  
Vol 88 (3) ◽  
pp. 033904 ◽  
Author(s):  
Tyler K. Johnson ◽  
Jeffrey A. Ivie ◽  
Jason Jaruvang ◽  
Oliver L. A. Monti
Keyword(s):  
Single Molecule ◽  
Break Junctions

Three-Terminal Single-Molecule Junctions Formed by Mechanically Controllable Break Junctions with Side Gating

Nano Letters ◽  
2013 ◽  
Vol 13 (6) ◽  
pp. 2809-2813 ◽  
Author(s):  
Dong Xiang ◽  
Hyunhak Jeong ◽  
Dongku Kim ◽  
Takhee Lee ◽  
Yongjin Cheng ◽  
...  
Keyword(s):  
Single Molecule ◽  
Break Junctions ◽  
Single Molecule Junctions

Measuring single molecule conductance with break junctions

2006 ◽  
Vol 131 ◽  
pp. 145-154 ◽  
Author(s):  
Jin He ◽  
Otto Sankey ◽  
Myeong Lee ◽  
Nongjian Tao ◽  
Xiulan Li ◽  
...  
Keyword(s):  
Single Molecule ◽  
Break Junctions

scholarly journals Single-molecule nanopore enzymology

2017 ◽  
Vol 372 (1726) ◽  
pp. 20160230 ◽  
Author(s):  
Kherim Willems ◽  
Veerle Van Meervelt ◽  
Carsten Wloka ◽  
Giovanni Maglia
Keyword(s):  
Membrane Proteins ◽  
Chemical Reactions ◽  
Bias Voltage ◽  
Single Molecule ◽  
Ionic Current ◽  
Enzymatic Reactions ◽  
Current Passing ◽  
Single Molecule Level ◽  
Membrane Pores ◽  
Native Proteins

Biological nanopores are a class of membrane proteins that open nanoscale water conduits in biological membranes. When they are reconstituted in artificial membranes and a bias voltage is applied across the membrane, the ionic current passing through individual nanopores can be used to monitor chemical reactions, to recognize individual molecules and, of most interest, to sequence DNA. In addition, a more recent nanopore application is the analysis of single proteins and enzymes. Monitoring enzymatic reactions with nanopores, i.e. nanopore enzymology, has the unique advantage that it allows long-timescale observations of native proteins at the single-molecule level. Here, we describe the approaches and challenges in nanopore enzymology. This article is part of the themed issue ‘Membrane pores: from structure and assembly, to medicine and technology’.

scholarly journals Lithographic mechanical break junctions for single-molecule measurements in vacuum: possibilities and limitations

2008 ◽  
Vol 10 (6) ◽  
pp. 065008 ◽  
Author(s):  
Christian A Martin ◽  
Dapeng Ding ◽  
Herre S J van der Zant ◽  
Jan M van Ruitenbeek
Keyword(s):  
Single Molecule ◽  
Break Junctions
Sign in / Sign up

Export Citation Format

Share Document