Electrochemical detection of p-ethylguaiacol, a fungi infected fruit volatile using metal oxide nanoparticles

The Analyst ◽  
2014 ◽  
Vol 139 (15) ◽  
pp. 3804-3810 ◽  
Author(s):  
Yi Fang ◽  
Yogeswaran Umasankar ◽  
Ramaraja P. Ramasamy
Keyword(s):  
Metal Oxide ◽  
Electrochemical Detection ◽  
Metal Oxide Nanoparticles ◽  
Sensitive Detection ◽  
Oxide Nanoparticles ◽  
Low Concentrations ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

The highly sensitive detection ofp-ethylguaiacol at low concentrations using SnO2and TiO2metal oxide nanoparticles is described.

Ultrasensitive electrochemical detection of Hg2+based on an Hg2+-triggered exonuclease III-assisted target recycling strategy

The Analyst ◽  
2018 ◽  
Vol 143 (23) ◽  
pp. 5771-5778 ◽  
Author(s):  
Xiaolei Song ◽  
Yu Wang ◽  
Su Liu ◽  
Xue Zhang ◽  
Haiwang Wang ◽  
...  
Keyword(s):  
Electrochemical Detection ◽  
Electrochemical Method ◽  
Sensitive Detection ◽  
Mercury Ions ◽  
Exonuclease Iii ◽  
Target Recycling ◽  
Highly Sensitive ◽  
Recycling Amplification ◽  
Highly Sensitive Detection

An isothermal electrochemical method for the highly sensitive detection of mercury ions (Hg2+) was established based on Hg2+-triggered exonuclease III-aided target recycling amplification.

scholarly journals FRET Pumping of Rhodamine-Based Probe in Light-Harvesting Nanoparticles for Highly Sensitive Detection of Cu2+

2021 ◽  
Author(s):  
Aleksandr Mironenko ◽  
Mikhail Tutov ◽  
Aleksandr Chepak ◽  
Svetlana Bratskaya
Keyword(s):  
Light Harvesting ◽  
Aqueous Media ◽  
Optical Signal ◽  
Sensitive Detection ◽  
Excitation Light ◽  
Low Concentrations ◽  
Highly Sensitive ◽  
Novel Strategy ◽  
Highly Sensitive Detection ◽  
Solid Liquid

In this work we presented novel strategy for increasing the performance of popular fluorescent probes on the basis of rhodamine-lactam platform. This strategy is based on the incorporation of probe molecules into the light-harvesting nanoparticles to pump modulated optical signal by Förster resonant energy transfer. Using the commercially available Cu2+ probe as a reference chemical, we have developed an efficient approach to significantly improve its sensing performance. Within obtained nanoparticles coumarin-30 nanoantenna absorbs excitation light and pumps incorporated sensing molecules providing bright fluorescence to a small number of emitters, while changing the probe-analyte equilibrium from liquid-liquid to solid-liquid significantly increased the apparent association constant, which together provided a ~100-fold decrease in the detection limit. The developed nanoprobe allows highly sensitive detection of Cu2+ ions in aqueous media without organic co-solvents usually required for dissolution of the probe, and demonstrate compatibility with inexpensive fluorometers and the ability to detect low concentrations with the naked eye.

Metal Oxide “Nanosponges” as Chemical Sensors: Highly Sensitive Detection of Hydrogen with Nanosponge Titania

2007 ◽  
Vol 119 (23) ◽  
pp. 4376-4379 ◽  
Author(s):  
Abu Samah Zuruzi ◽  
Noel C. MacDonald ◽  
Martin Moskovits ◽  
Andrei Kolmakov
Keyword(s):  
Metal Oxide ◽  
Chemical Sensors ◽  
Sensitive Detection ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

Metal Oxide “Nanosponges” as Chemical Sensors: Highly Sensitive Detection of Hydrogen with Nanosponge Titania

2007 ◽  
Vol 46 (23) ◽  
pp. 4298-4301 ◽  
Author(s):  
Abu Samah Zuruzi ◽  
Noel C. MacDonald ◽  
Martin Moskovits ◽  
Andrei Kolmakov
Keyword(s):  
Metal Oxide ◽  
Chemical Sensors ◽  
Sensitive Detection ◽  
Highly Sensitive ◽  
Highly Sensitive Detection
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