A novel and sensitive turn-on fluorescent biosensor for the determination of thioctic acid based on Cu2+-modulated N-acetyl-l-cysteine capped CdTe quantum dots

RSC Advances ◽  
2015 ◽  
Vol 5 (55) ◽  
pp. 44173-44182 ◽  
Author(s):  
Xuanping Tan ◽  
Qin Li ◽  
Xiaoning Zhang ◽  
Yizhong Shen ◽  
Jidong Yang
Keyword(s):  
Quantum Dots ◽  
Aqueous Media ◽  
Fluorescence Sensor ◽  
Cdte Quantum Dots ◽  
Thioctic Acid ◽  
Fluorescent Biosensor ◽  
Turn On ◽  
Cdte Qds

A new fluorescence sensor for the determination of thioctic acid (TA) in aqueous media based on the recovered fluorescence of N-acetyl-l-cysteine capped CdTe quantum dots [NALC-CdTe QDs]–Cu2+ system was proposed.

Label-free and turn-on fluorescent cyanide sensor based on CdTe quantum dots using silver nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (50) ◽  
pp. 40088-40093 ◽  
Author(s):  
Ali A. Ensafi ◽  
N. Kazemifard ◽  
B. Rezaei
Keyword(s):  
Quantum Dots ◽  
Silver Nanoparticles ◽  
Trace Amount ◽  
Fluorescence Sensor ◽  
Cdte Quantum Dots ◽  
Label Free ◽  
Turn On

A turn-on fluorescence sensor is introduced for determination of trace amount of cyanide, based on glutathione-capped Cd–Te quantum dots.

Electrostatic repulsion strategy for highly selective and sensitive “switch–on” fluorescence sensor of ascorbic acid based on the cysteamine-coated CdTe quantum dots and cerium (IV)

2021 ◽  
Author(s):  
Yifei Guo ◽  
Jingjing Du ◽  
Jianjun Li ◽  
Ran Yang ◽  
Peter B. de Harrington ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Ascorbic Acid ◽  
Hydrothermal Method ◽  
Cadmium Chloride ◽  
Fluorescence Sensor ◽  
Cdte Quantum Dots ◽  
Electrostatic Repulsion ◽  
Functional Monomer ◽  
Simple Hydrothermal Method ◽  
Cdte Qds

In this work, cysteamine-coated CdTe quantum dots (CA-CdTe QDs) were synthesized by a simple hydrothermal method employing cadmium chloride as the cadmium source and cysteamine hydrochloride as the functional monomer....

Fluorescence suppression of MPA stabilized CdTe QDs for direct determination of propranolol

2017 ◽  
Vol 9 (6) ◽  
pp. 929-936 ◽  
Author(s):  
Fan Zhang ◽  
Miaomiao Chen ◽  
Haiqing Zhang ◽  
Huayu Xiong ◽  
Wei Wen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fluorescent Sensor ◽  
Direct Determination ◽  
Cdte Quantum Dots ◽  
Mercaptopropionic Acid ◽  
Cdte Qds

A sensitive, convenient and rapid fluorescent sensor for effectively and directly detecting propranolol was proposed based on the fluorescence suppression of 3-mercaptopropionic acid stabilized CdTe quantum dots.

Detection of glutathione with an “off–on” fluorescent biosensor based on N-acetyl-l-cysteine capped CdTe quantum dots

The Analyst ◽  
2015 ◽  
Vol 140 (19) ◽  
pp. 6748-6757 ◽  
Author(s):  
Xuanping Tan ◽  
Jidong Yang ◽  
Qin Li ◽  
Qiong Yang
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
High Sensitivity ◽  
Cdte Quantum Dots ◽  
Fluorescent Biosensor

This paper reports a quantum dot (QD)-based “off–on” fluorescent biosensor specifically for the determination of glutathione (GSH) with high sensitivity.

CdTe quantum dots as fluorescence sensor for the determination of vitamin B6 in aqueous solution

2008 ◽  
Vol 19 (7) ◽  
pp. 855-859 ◽  
Author(s):  
Jie Fang Sun ◽  
Cui Ling Ren ◽  
Li Hong Liu ◽  
Xing Guo Chen
Keyword(s):  
Aqueous Solution ◽  
Quantum Dots ◽  
Vitamin B6 ◽  
Fluorescence Sensor ◽  
Cdte Quantum Dots

A novel and sensitive turn-on fluorescent biosensor for the DNA detection using Sm3+-modulated glutathione-capped CdTe quantum dots

2014 ◽  
Vol 199 ◽  
pp. 389-397 ◽  
Author(s):  
Yizhong Shen ◽  
Shaopu Liu ◽  
Jidong Yang ◽  
Linlin Wang ◽  
Xuanping Tan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Dna Detection ◽  
Cdte Quantum Dots ◽  
Fluorescent Biosensor ◽  
Turn On

scholarly journals A “Turn-On” Fluorescence Copper Biosensor Based on DNA Cleavage-Dependent Graphene Oxide-dsDNA-CdTe Quantum Dots Complex

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2605 ◽  
Author(s):  
Liyun Ding ◽  
Bing Xu ◽  
Tao Li ◽  
Jun Huang ◽  
Wei Bai
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Dna Cleavage ◽  
Copper Ions ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Cdte Quantum Dots ◽  
Turn On ◽  
Cdte Qds ◽  
Transmission Electron

A novel “turn-on” fluorescent copper biosensor is developed successfully based on the graphene oxide (GO)-dsDNA-CdTe quantum dots (QDs) complex via chemical crosslink method. The optical and structure properties of GO-dsDNA-CdTe QDs complex are studied by fluorescence (FL) spectra and transmission electron microscopy (TEM) in detail. It is demonstrated that the fluorescence quenching of CdTe QDs is a process of fluorescence resonance energy transfer (FRET) due to the essential surface and quenching properties of two-dimensional GO. Copper ions induce the catalytic reaction of DNA chain and irreversibly break at the cleavage site, which will cause the G-quadruplex formation, moreover further result in the CdTe QDs separated from GO and restored its fluorescence. Therefore, a significant recovery effect on the fluorescence of the GO-dsDNA-CdTe QDs complex is observed in the presence of copper ions. The fluorescence responses are concentration-dependent and can be well described by a linear equation. Compared with other metal ions, the sensor performs good selectivity for copper ions.

CdTe quantum dots as fluorescence sensor for the determination of aminophylline in aqueous solution

2013 ◽  
Vol 115 (4) ◽  
pp. 596-600 ◽  
Author(s):  
Rui-yong Wang ◽  
Jing Wu ◽  
Lv-jing Wang ◽  
Rui Wang ◽  
Huan-jing Dou
Keyword(s):  
Aqueous Solution ◽  
Quantum Dots ◽  
Fluorescence Sensor ◽  
Cdte Quantum Dots
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