Tailoring the performance of electrochemical biosensors based on carbon nanomaterials via aryldiazonium electrografting

2020 ◽  
pp. 107697
Author(s):  
Luisa Pilan
Chemosensors ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 96
Author(s):  
Gennady Evtugyn ◽  
Anna Porfireva ◽  
Rezeda Shamagsumova ◽  
Tibor Hianik

Carbon nanomaterials offer unique opportunities for the assembling of electrochemical aptasensors due to their high electroconductivity, redox activity, compatibility with biochemical receptors and broad possibilities of functionalization and combination with other auxiliary reagents. In this review, the progress in the development of electrochemical aptasensors based on carbon nanomaterials in 2016–2020 is considered with particular emphasis on the role of carbon materials in aptamer immobilization and signal generation. The synthesis and properties of carbon nanotubes, graphene materials, carbon nitride, carbon black particles and fullerene are described and their implementation in the electrochemical biosensors are summarized. Examples of electrochemical aptasensors are classified in accordance with the content of the surface layer and signal measurement mode. In conclusion, the drawbacks and future prospects of carbon nanomaterials’ application in electrochemical aptasensors are briefly discussed.


2021 ◽  
Vol 1 (19) ◽  
pp. 231-232
Author(s):  
R.V. Shamagsumova

Operational and analytical characteristics of electrochemical biosensors based on acetylcholinesterase have been considered for the determination of enzyme inhibitors. As was shown, application of the mixtures of carbon nanomaterials increases sensitivity of determination over that of single component coatings. Biosensors were tested on determination of reversible inhibitors in urea and blood serum.


2020 ◽  
Vol MA2020-01 (27) ◽  
pp. 1893-1893
Author(s):  
Pablo Gallay ◽  
Michael López-Mujica ◽  
Elvis Ortiz ◽  
Yuanyuan Zhang ◽  
Fabrizio Perrachione ◽  
...  

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2700
Author(s):  
Ivan Bobrinetskiy ◽  
Marko Radovic ◽  
Francesco Rizzotto ◽  
Priya Vizzini ◽  
Stefan Jaric ◽  
...  

Electrochemical biosensors utilizing nanomaterials have received widespread attention in pathogen detection and monitoring. Here, the potential of different nanomaterials and electrochemical technologies is reviewed for the development of novel diagnostic devices for the detection of foodborne pathogens and their biomarkers. The overview covers basic electrochemical methods and means for electrode functionalization, utilization of nanomaterials that include quantum dots, gold, silver and magnetic nanoparticles, carbon nanomaterials (carbon and graphene quantum dots, carbon nanotubes, graphene and reduced graphene oxide, graphene nanoplatelets, laser-induced graphene), metal oxides (nanoparticles, 2D and 3D nanostructures) and other 2D nanomaterials. Moreover, the current and future landscape of synergic effects of nanocomposites combining different nanomaterials is provided to illustrate how the limitations of traditional technologies can be overcome to design rapid, ultrasensitive, specific and affordable biosensors.


2020 ◽  
Vol 167 (3) ◽  
pp. 037555 ◽  
Author(s):  
Ravinder Kour ◽  
Sandeep Arya ◽  
Sheng-Joue Young ◽  
Vinay Gupta ◽  
Pankaj Bandhoria ◽  
...  

Biosensors ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 414
Author(s):  
Pushpesh Ranjan ◽  
Shalu Yadav ◽  
Mohd. Abubakar Sadique ◽  
Raju Khan ◽  
Jamana Prasad Chaurasia ◽  
...  

Ionic liquids are gaining high attention due to their extremely unique physiochemical properties and are being utilized in numerous applications in the field of electrochemistry and bio-nanotechnology. The excellent ionic conductivity and the wide electrochemical window open a new avenue in the construction of electrochemical devices. On the other hand, carbon nanomaterials, such as graphene (GR), graphene oxide (GO), carbon dots (CDs), and carbon nanotubes (CNTs), are highly utilized in electrochemical applications. Since they have a large surface area, high conductivity, stability, and functionality, they are promising in biosensor applications. Nevertheless, the combination of ionic liquids (ILs) and carbon nanomaterials (CNMs) results in the functional ILs-CNMs hybrid nanocomposites with considerably improved surface chemistry and electrochemical properties. Moreover, the high functionality and biocompatibility of ILs favor the high loading of biomolecules on the electrode surface. They extremely enhance the sensitivity of the biosensor that reaches the ability of ultra-low detection limit. This review aims to provide the studies of the synthesis, properties, and bonding of functional ILs-CNMs. Further, their electrochemical sensors and biosensor applications for the detection of numerous analytes are also discussed.


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