Single molecule conductance of bipyridyl ethynes: the role of surface binding modes (†).
Summary of "Single molecule conductance of bipyridyl ethynes: the role of surface binding modes (†)."
We report on the experimental studies of single molecule conductance of 1,2-bi(pyridin-4-yl)ethyne (BPY-EY) and perfluoro-1,2-bi(pyridin-4-yl)ethyne (PFBPY-EY). The conductance measurements of the molecules bridging two Au electrodes have been carried out in toluene solutions using the scanning tunneling microscopy (STM) based break junction technique. Two conductance values of (2.2 ± 0.5) × 10(-4) and (5.0 ± 0.8) × 10(-5) G(0) have been found for BPY-EY but only one, (4.2 ± 0.5) × 10(-5) G(0), for PFBPY-EY. The disparity is attributed to steric differences between the molecules at the electrode.
Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico 88003, and Department of Chemistry, Florida State University, Tallahassee, Fl 32306.
This article was published in the following journal.
Name: The journal of physical chemistry. B
Medical and Biotech [MESH] Definitions
A molecule that binds to another molecule, used especially to refer to a small molecule that binds specifically to a larger molecule, e.g., an antigen binding to an antibody, a hormone or neurotransmitter binding to a receptor, or a substrate or allosteric effector binding to an enzyme. Ligands are also molecules that donate or accept a pair of electrons to form a coordinate covalent bond with the central metal atom of a coordination complex. (From Dorland, 27th ed)
Activated-leukocyte Cell Adhesion Molecule
Cell adhesion molecule expressed on activated leukocytes, fibroblasts, and neurons. It is a ligand for CD6. ALCAM-CD6 interactions may play a role in the binding of T and B cells to activated leukocytes.
Gtp-binding Protein Alpha Subunit, Gi2
A PERTUSSIS TOXIN-sensitive GTP-binding protein alpha subunit. It couples with a variety of CELL SURFACE RECEPTORS, has been implicated in INTERLEUKIN-12 production, and may play a role in INFLAMMATORY BOWEL DISEASES.
A family of very small DNA viruses containing a single molecule of single-stranded DNA and consisting of two subfamilies: PARVOVIRINAE and DENSOVIRINAE. They infect both vertebrates and invertebrates.
Part of a MESSENGER RNA molecule that undergoes a conformation change upon binding a specific metabolite or other small molecule thereby regulating the messenger RNA's transcription, post-transcriptional processing, transport, translation, or stability in response to varying levels of the metabolite or other small molecule.
The symmetry of a molecule junction has been shown to play a significant role in determining the conductance of the molecule, but the details of how conductance changes with symmetry have heretofore b...
Conductance across a metal|molecule|metal junction is strongly influenced by the molecule-substrate contacts, and for a given molecular structure, multiple conductance values are frequently observed a...
Proper shielding: Encapsulated oligothiophenes for the investigation of single-molecule conductance are described. UV/Vis/NIR measurements of the oxidized species show the absence of intermolecular in...
We investigate a prototypical single-molecule switch marrying force spectroscopy and molecular electronics far from the thermodynamic limit. We use molecular dynamics to simulate a conducting atomic f...
The formation mechanism of bipyridyl molecule catalyzed by nickel catalyst with pyridine precursor has been studied using density functional theory calculations. The formation of bipyridyl on Ni(111)...
This study will examine the structure of the receptor molecule for the herpes simplex virus (HSV) and determine if the receptor's structure is related to susceptibility to infection with t...
Protein-bound uremic retention solutes are increasingly recognized to play a role in the pathophysiology of the uremic syndrome. Numerous in vitro findings are indicative for their implica...
Plasma histidine-rich glycoprotein (HRG) binds to platelets in the presence of zinc (1). This binding is totally blocked by a monoclonal antibody directed against platelet membrane CD36....
The purpose of this study is to determine whether Retinol binding protein 4 has a role in insulin resistance development in patients suffering from end stage renal disease on hemodialysis.
N-cadherin, a protein involved in blood vessel cell binding, is increased as cancer progresses, and is on the surface of many tumor cells. ADH-1 blocks N-cadherin. This study will test t...