One-step modification of various electrode surfaces using diazonium salt compounds and the application of this technology to electrochemical DNA (E-DNA) sensors

2012 ◽  
Vol 76 ◽  
pp. 394-403 ◽  
Author(s):  
Da-Jung Chung ◽  
Sang-Hyub Oh ◽  
Shanmugasundaram Komathi ◽  
Anantha Iyengar Gopalan ◽  
Kwang- Pill Lee ◽  
...  
Keyword(s):  
Diazonium Salt ◽  
Dna Sensors ◽  
Electrode Surfaces ◽  
One Step

scholarly journals Highly-Ordered Covalent Anchoring of Carbon Nanotubes on Electrode Surfaces by Diazonium Salt Reactions

2011 ◽  
Vol 50 (15) ◽  
pp. 3457-3461 ◽  
Author(s):  
Olimpia Arias de Fuentes ◽  
Tommaso Ferri ◽  
Marco Frasconi ◽  
Valerio Paolini ◽  
Roberto Santucci
Keyword(s):  
Carbon Nanotubes ◽  
Diazonium Salt ◽  
Electrode Surfaces

Modification of Aryldiazonium Salts on Electrodes towards Designing Stable and Versatile Sensing Interfaces

2011 ◽  
Vol 64 (5) ◽  
pp. 658
Author(s):  
Guozhen Liu
Keyword(s):  
Diazonium Salt ◽  
Electrode Surfaces ◽  
Alternative System ◽  
Gold Chemistry ◽  
Diazonium Salt Chemistry ◽  
Biosensor Applications

This paper reports the strategy of electrochemically reductive adsorption of aryldiazonium salts on electrodes for designing stable sensing interface. The diazonium salt chemistry can serve as an alternative system to alkanethiol-gold chemistry for the modification of electrode surfaces for biosensor applications.

scholarly journals Flexible Chemiresistive Nitrogen Oxides Sensors Based on a Nanocomposite of Polypyrrole- Reduced Graphene Oxide Grafted Carboxybenzene Diazonium Salts.

2021 ◽  
Author(s):  
Djamil GUETTICHE ◽  
Ahmed MEKKI ◽  
BENMOULOUD Lilia ◽  
Tighilt Fatma-zohra ◽  
Amar BOUDJELLAL
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Spin Coating ◽  
Diazonium Salt ◽  
Covalent Bonding ◽  
Diazonium Salts ◽  
Reduced Graphene ◽  
One Step ◽  
Higher Sensitivity

Abstract Nanocomposites of polypyrrole/reduced graphene oxide (PPy/rGO) and polypyrrole/ functionalized reduced graphene oxide with aryl 4-carboxybenzene diazonium salt (PPy/rGO-aryl-COOH) were prepared through covalent bonding by simple one-step chemical oxidative synthesis. The as-prepared nanocomposites were deposited on BOPET substrate by spin coating to test their chemiresistive sensitivity properties on a homemade modular for online detection of (NO2) vapors at ambient temperature. Results showed that PPy/rGO-aryl-COOH forms a homogeneous nanocomposite within the size of 80 nanometers and improvement of the crystalline ordering. The more enhanced NO2 sensing properties have been shown by PPy/rGO- aryl-COOH in terms of higher sensitivity (1.01%/ppm), the faster response time (129 s), and the detection limit of (2ppm). Reproducibility features were also investigated.Moreover, humidity rates and temperature effects were also tested. Finally, impedance spectroscopy is conducted in the fresh air and in the presence of gas. These results highlight the paramount role of functionalization of reduced graphene oxide (rGO-aryl-COOH).

scholarly journals Highly-Ordered Covalent Anchoring of Carbon Nanotubes on Electrode Surfaces by Diazonium Salt Reactions

2011 ◽  
Vol 123 (15) ◽  
pp. 3519-3523 ◽  
Author(s):  
Olimpia Arias de Fuentes ◽  
Tommaso Ferri ◽  
Marco Frasconi ◽  
Valerio Paolini ◽  
Roberto Santucci
Keyword(s):  
Carbon Nanotubes ◽  
Diazonium Salt ◽  
Electrode Surfaces

Grafting Polymers on Surfaces: A New Powerful and Versatile Diazonium Salt-Based One-Step Process in Aqueous Media

2007 ◽  
Vol 19 (25) ◽  
pp. 6323-6330 ◽  
Author(s):  
Vincent Mévellec ◽  
Sébastien Roussel ◽  
Lorraine Tessier ◽  
Jérôme Chancolon ◽  
Martine Mayne-LʼHermite ◽  
...  
Keyword(s):  
Diazonium Salt ◽  
Aqueous Media ◽  
Step Process ◽  
One Step

An Interactive Minicomputer Program for the Indexing and Simulation of Electron Diffraction Patterns

1976 ◽  
Vol 34 ◽  
pp. 542-543
Author(s):  
R.P. Goehner ◽  
W.T. Hatfield ◽  
Prakash Rao
Keyword(s):  
Electron Diffraction ◽  
Real Time ◽  
Pattern Analysis ◽  
Flow Diagram ◽  
Hard Copy ◽  
Time Analysis ◽  
Real Time Analysis ◽  
Transmission Electron ◽  
One Step ◽  
Diffraction Patterns

Computer programs are now available in various laboratories for the indexing and simulation of transmission electron diffraction patterns. Although these programs address themselves to the solution of various aspects of the indexing and simulation process, the ultimate goal is to perform real time diffraction pattern analysis directly off of the imaging screen of the transmission electron microscope. The program to be described in this paper represents one step prior to real time analysis. It involves the combination of two programs, described in an earlier paper(l), into a single program for use on an interactive basis with a minicomputer. In our case, the minicomputer is an INTERDATA 70 equipped with a Tektronix 4010-1 graphical display terminal and hard copy unit.A simplified flow diagram of the combined program, written in Fortran IV, is shown in Figure 1. It consists of two programs INDEX and TEDP which index and simulate electron diffraction patterns respectively. The user has the option of choosing either the indexing or simulating aspects of the combined program.

Nutrient-regulated gene expression in eukaryotes

2006 ◽  
Vol 73 ◽  
pp. 85-96 ◽  
Author(s):  
Richard J. Reece ◽  
Laila Beynon ◽  
Stacey Holden ◽  
Amanda D. Hughes ◽  
Karine Rébora ◽  
...  
Keyword(s):  
Gene Expression ◽  
Rna Polymerase ◽  
Rna Polymerase Ii ◽  
Transcriptional Control ◽  
Direct Interaction ◽  
Signalling Pathways ◽  
A Cell ◽  
One Step ◽  
Higher Eukaryotes ◽  
Regulated Gene Expression

The recognition of changes in environmental conditions, and the ability to adapt to these changes, is essential for the viability of cells. There are numerous well characterized systems by which the presence or absence of an individual metabolite may be recognized by a cell. However, the recognition of a metabolite is just one step in a process that often results in changes in the expression of whole sets of genes required to respond to that metabolite. In higher eukaryotes, the signalling pathway between metabolite recognition and transcriptional control can be complex. Recent evidence from the relatively simple eukaryote yeast suggests that complex signalling pathways may be circumvented through the direct interaction between individual metabolites and regulators of RNA polymerase II-mediated transcription. Biochemical and structural analyses are beginning to unravel these elegant genetic control elements.

CAD: One Step Forward, One Step Back

2010 ◽  
Vol 43 (18) ◽  
pp. 16
Author(s):  
MATTHEW R.G. TAYLOR
Keyword(s):  
One Step

One-Step Synthesis and Magnetic Phase Transformation of Ln-TM-B Alloy by Chemical Reduction

2007 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
C.W. Kim ◽  
Y.H. Kim ◽  
H.G. Cha ◽  
D.K. Lee ◽  
Y.S. Kang
Keyword(s):  
Phase Transformation ◽  
Magnetic Phase ◽  
Chemical Reduction ◽  
One Step
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