Fluorescence Turn-On Detection of Gaseous Nitric Oxide Using Ferric Dithiocarbamate Complex Functionalized Quantum Dots

2014 ◽  
Vol 86 (12) ◽  
pp. 5628-5632 ◽  
Author(s):  
Jian Sun ◽  
Yehan Yan ◽  
Mingtai Sun ◽  
Huan Yu ◽  
Kui Zhang ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Quantum Dots ◽  
Turn On ◽  
Dithiocarbamate Complex ◽  
Fluorescence Turn On

para-Hydroxy Thiophenol-Coated CdSe/ZnS Quantum Dots as a Turn-On Fluorescent Probe for H2O2 Detection in Aqueous Media

2018 ◽  
Vol 71 (12) ◽  
pp. 971 ◽  
Author(s):  
Xiaomei Wang ◽  
Yong Luo ◽  
Hu Xu ◽  
Dan Li ◽  
Yuhong Wang
Keyword(s):  
Quantum Dots ◽  
Limit Of Detection ◽  
Aqueous Media ◽  
Hydroxy Ketone ◽  
Hole Transfer ◽  
Turn On ◽  
H2o2 Detection ◽  
Potential Alternative ◽  
Fluorescence Turn On ◽  
Optimized Conditions

Since hydrogen peroxide plays an important role in various fields, a facile, simple, highly selective, and stable analytic method for H2O2 is desirable. Semiconductor quantum dots (QDs) have acted as a potential alternative for organic fluorophores in fluorescence analytical fields due to their superior optical properties. Herein, we report hydrophilic p-hydroxy thiophenol (p-HTP) coated CdSe/ZnS QDs (denoted as p-HTP-QDs) acting as a selective fluorescence ‘turn-on’ probe for H2O2 in aqueous media. The obtained p-HTP-QD probe exhibits weak fluorescence, which stems from hole transfer from the QDs to p-HTP. The presence of H2O2 induces an oxidative structural transformation of p-HTP in p-HTP-QDs from a phenol structure to an α-hydroxy ketone derivative, which extremely reduces the driving force for hole transfer. Thus, the QDs photoluminescence (PL) was re-switched on. Under optimized conditions, an excellent linear relationship between fluorescence response and H2O2 concentration could be produced with a linear range from 0.309 to 4.900mM. The limit of detection of this probe was found to be 0.135mM. Moreover, the present probe exhibited a high selectivity of H2O2 over other reactive oxygen species/reactive nitrogen species (ROS/RNS) and was successfully used in the detection of H2O2 in real water samples.

scholarly journals Graphene quantum dots based fluorescence turn-on nanoprobe for highly sensitive and selective imaging of hydrogen sulfide in living cells

2018 ◽  
Vol 6 (4) ◽  
pp. 779-784 ◽  
Author(s):  
Nan Li ◽  
Aung Than ◽  
Jie Chen ◽  
Fengna Xi ◽  
Jiyang Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrogen Sulfide ◽  
Real Time ◽  
Dynamic Change ◽  
Graphene Quantum Dots ◽  
Living Cells ◽  
Real Time Monitoring ◽  
Turn On ◽  
Highly Sensitive ◽  
Fluorescence Turn On

Graphene quantum dots-based fluorescent turn-on nanoprobe is developed for real-time monitoring the triggered dynamic change of intracellular H2S.

Nucleic acid-controlled quantum dots aggregation: A label-free fluorescence turn-on strategy for alkaline phosphatase detection

Talanta ◽  
2017 ◽  
Vol 169 ◽  
pp. 64-69 ◽  
Author(s):  
Zhenzhen Hu ◽  
Jian Chen ◽  
Yongxin Li ◽  
Yan Wang ◽  
Qingfeng Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Alkaline Phosphatase ◽  
Nucleic Acid ◽  
Label Free ◽  
Turn On ◽  
Fluorescence Turn On

Fluorescence turn-on for the highly selective detection of nitric oxide in vitro and in living cells

The Analyst ◽  
2016 ◽  
Vol 141 (8) ◽  
pp. 2600-2605 ◽  
Author(s):  
Xiaomei Liu ◽  
Shuang Liu ◽  
Gaolin Liang
Keyword(s):  
Nitric Oxide ◽  
Living Cells ◽  
Water Soluble ◽  
Sensitive Detection ◽  
Selective Detection ◽  
Turn On ◽  
Fluorescence Turn On

A water-soluble, biocompatible, small molecular fluorescent turn-on probe was developed for the highly selective and sensitive detection of NO in vitro and in living cells.

A Mn:ZnSe quantum dot-based turn-on fluorescent sensor for the highly selective and sensitive detection of Cd2+

2020 ◽  
Vol 12 (4) ◽  
pp. 552-556 ◽  
Author(s):  
Zhi-Qiang Zhou ◽  
Li-Yun Yang ◽  
Yuan-Ping Liao ◽  
Hui-Yan Wu ◽  
Xiao-Hui Zhou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Fluorescent Sensor ◽  
Sensitive Detection ◽  
Sensing Properties ◽  
Turn On ◽  
Fluorescence Turn On

A highly selective and sensitive nanoprobe with fluorescence turn-on sensing properties for recognizing Cd2+ was developed through replacing Mn2+ near the surface of Mn:ZnSe quantum dots.

A one-step selective fluorescence turn-on detection of cysteine and homocysteine based on a facile CdTe/CdS quantum dots–phenanthroline system

2013 ◽  
Vol 787 ◽  
pp. 181-188 ◽  
Author(s):  
Sheng Chen ◽  
Jianniao Tian ◽  
Yixuan Jiang ◽  
Yanchun Zhao ◽  
Juanni Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cds Quantum Dots ◽  
Turn On ◽  
One Step ◽  
Fluorescence Turn On
Sign in / Sign up

Export Citation Format

Share Document