scholarly journals Poly(ferrocenylsilane) electrolytes as a gold nanoparticle foundry: “two-in-one” redox synthesis and electrosteric stabilization, and sensing applications

Nanoscale ◽  
2017 ◽  
Vol 9 (48) ◽  
pp. 19255-19262 ◽  
Author(s):  
J. Song ◽  
Y. N. Tan ◽  
D. Jańczewski ◽  
M. A. Hempenius ◽  
J. W. Xu ◽  
...  
Keyword(s):  
Vitamin C ◽  
Gold Nanoparticle ◽  
Sensing Applications ◽  
Electrosteric Stabilization ◽  
Redox Responsive ◽  
Redox Molecules

Synthesis of stable and redox responsive AuNPs using organometallic polyelectrolytes for the detection of redox molecules, e.g. vitamin C, in a controlled and facile manner.

scholarly journals A modular toolset for electrogenetics

2021 ◽  
Author(s):  
Joshua M Lawrence ◽  
Yutong Yin ◽  
Paolo Bombelli ◽  
Alberto Scarampi ◽  
Marko Storch ◽  
...  
Keyword(s):  
Gene Expression ◽  
Industrial Applications ◽  
Electrochemical Activation ◽  
Genetic Circuits ◽  
Control Of Gene Expression ◽  
Promoter Library ◽  
Redox Responsive ◽  
Electrochemical Control ◽  
Redox Molecules ◽  
New Applications

Synthetic biology research and its industrial applications rely on the deterministic spatiotemporal control of gene expression. Recently, electrochemical control of gene expression has been demonstrated in electrogenetic systems (redox-responsive promoters used alongside redox inducers and an electrode), allowing for the direct integration of electronics with complex biological processes for a variety of new applications. However, the use of electrogenetic systems is limited by poor activity, tunability and standardisation. Here, we have developed a variety of genetic and electrochemical tools that facilitate the design and vastly improve the performance of electrogenetic systems. We developed a strong, unidirectional, redox-responsive promoter before deriving a mutant promoter library with a spectrum of strengths. We then constructed genetic circuits with these parts and demonstrated their activation by multiple classes of redox molecules. Finally, we demonstrated electrochemical activation of gene expression in aerobic conditions utilising a novel, modular bioelectrochemical device. This toolset provides researchers with all the elements needed to design and build optimised electrogenetic systems for specific applications.

Electron transfer across the germanium–polyelectrolyte–gold nanoparticle interface: convenient detection and applications in sensing

2016 ◽  
Vol 18 (38) ◽  
pp. 26942-26948 ◽  
Author(s):  
Harekrishna Ghosh ◽  
Ahmed Bouhekka ◽  
Thomas Bürgi
Keyword(s):  
Electron Transfer ◽  
Gold Nanoparticle ◽  
Sensing Applications ◽  
Photo Induced Electron Transfer

Photo-induced electron transfer across the germanium–polyelectrolyte–gold nanoparticle interface is used for sensing applications.

A green method to gold–graphene nanocomposite from cyclodextrin functionalized graphene for efficient non-enzymatic electrochemical sensing applications

RSC Advances ◽  
2015 ◽  
Vol 5 (40) ◽  
pp. 32027-32033 ◽  
Author(s):  
R. Aswathi ◽  
Mohamed Mukthar Ali ◽  
Anurudha Shukla ◽  
K. Y. Sandhya
Keyword(s):  
Gold Nanoparticle ◽  
Electrochemical Sensing ◽  
Functionalized Graphene ◽  
Green Method ◽  
Sensing Properties ◽  
Sensing Applications ◽  
Graphene Nanocomposite

Here, we report a new and green method of synthesis of gold nanoparticle functionalized graphene (Au–Gr) from β-cyclodextrin functionalized Gr (CD–Gr) with excellent electrochemical sensing properties.

Self-Assembled Gold Nanoparticle/Dendrimer Composite Films for Vapor Sensing Applications

Nano Letters ◽  
2002 ◽  
Vol 2 (5) ◽  
pp. 551-555 ◽  
Author(s):  
Nadejda Krasteva ◽  
Isabelle Besnard ◽  
Berit Guse ◽  
Roland E. Bauer ◽  
Klaus Müllen ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Composite Films ◽  
Vapor Sensing ◽  
Sensing Applications ◽  
Self Assembled

Gold-Nanoparticle-Decorated Titanium Nitride Electrodes Prepared by Glancing-Angle Deposition for Sensing Applications

2019 ◽  
Vol 2 (3) ◽  
pp. 1562-1569 ◽  
Author(s):  
Rezaul K. Khan ◽  
Ahmed A. Farghaly ◽  
Tiago A. Silva ◽  
Dexian Ye ◽  
Maryanne M. Collinson
Keyword(s):  
Titanium Nitride ◽  
Gold Nanoparticle ◽  
Glancing Angle Deposition ◽  
Sensing Applications ◽  
Glancing Angle ◽  
Angle Deposition

scholarly journals Molecularly Bridged Gold Nanoparticle Array for Sensing Applications

2014 ◽  
Vol 30 (1) ◽  
pp. 89-96 ◽  
Author(s):  
Hiroshi SHIIGI ◽  
Tsutomu NAGAOKA
Keyword(s):  
Gold Nanoparticle ◽  
Nanoparticle Array ◽  
Sensing Applications

scholarly journals Gold Nanoparticle-Based Colorimetric Strategies for Chemical and Biological Sensing Applications

Nanomaterials ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 861 ◽  
Author(s):  
Chia-Chen Chang ◽  
Chie-Pein Chen ◽  
Tzu-Heng Wu ◽  
Ching-Hsu Yang ◽  
Chii-Wann Lin ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Catalytic Properties ◽  
Colorimetric Assay ◽  
Cost Effective ◽  
Ease Of Use ◽  
Visual Change ◽  
The Past ◽  
Sensing Applications ◽  
Colorimetric Methods

Gold nanoparticles are popularly used in biological and chemical sensors and their applications owing to their fascinating chemical, optical, and catalytic properties. Particularly, the use of gold nanoparticles is widespread in colorimetric assays because of their simple, cost-effective fabrication, and ease of use. More importantly, the gold nanoparticle sensor response is a visual change in color, which allows easy interpretation of results. Therefore, many studies of gold nanoparticle-based colorimetric methods have been reported, and some review articles published over the past years. Most reviews focus exclusively on a single gold nanoparticle-based colorimetric technique for one analyte of interest. In this review, we focus on the current developments in different colorimetric assay designs for the sensing of various chemical and biological samples. We summarize and classify the sensing strategies and mechanism analyses of gold nanoparticle-based detection. Additionally, typical examples of recently developed gold nanoparticle-based colorimetric methods and their applications in the detection of various analytes are presented and discussed comprehensively.

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