A quantum dot-based fluorescence sensor for sensitive and enzymeless detection of creatinine

2016 ◽  
Vol 8 (30) ◽  
pp. 5911-5920 ◽  
Author(s):  
Narjes Tajarrod ◽  
Mohammad Kazem Rofouei ◽  
Majid Masteri-Farahani ◽  
Reza Zadmard
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Fluorescence Enhancement ◽  
Thioglycolic Acid ◽  
Fluorescence Sensor ◽  
Water Soluble ◽  
Core Shell

A schematic illustration of a sensitive creatinine probe using fluorescence enhancement of water-soluble thioglycolic acid capped ZnS:Mn/ZnS core/shell quantum dots.

SYNTHESIS AND PHOTOLUMINESCENCE OF WATER-SOLUBLE ZnS:Mn2+/ZnS QUANTUM DOTS BY NUCLEATION DOPING STRATEGY

NANO ◽  
2011 ◽  
Vol 06 (01) ◽  
pp. 75-79 ◽  
Author(s):  
ZHANGSEN YU ◽  
XIYING MA
Keyword(s):  
Quantum Dots ◽  
Solution Structure ◽  
Thioglycolic Acid ◽  
Luminescent Properties ◽  
Fluorescent Labeling ◽  
Water Soluble ◽  
Core Shell ◽  
X Ray Diffraction ◽  
X Ray ◽  
Synthesis Conditions

We report the synthesis of luminescent-doped core/shell quantum dots (QDs) of water-soluble manganese-doped zinc sulfide (ZnS:Mn2+/ZnS) . QDs of ZnS:Mn2+/ZnS were prepared by nucleation doping strategy, with thioglycolic acid (TGA) as stabilizer in aqueous solution. Structure and optical properties of the ZnS:Mn2+/ZnS core/shell quantum dots were characterized by X-ray diffraction and photoluminescence emission spectroscopy. The influence of the synthesis conditions on the luminescent properties of ZnS:Mn2+/ZnS QDs is discussed. Different Mn2+ concentrations, ratios of the TGA/ (Zn+Mn) and thickness of the ZnS shell were used. Results showed that the ZnS:Mn2+/ZnS QDs are water-soluble and have improved fluorescence properties. Therefore, Mn2+ -doped ZnS quantum dots could be potential candidates as fluorescent labeling agents in biology.

Synthesis of CdTe and CdTe/CdS Core-Shell Quantum Dots and their Optical Properties

2011 ◽  
Vol 306-307 ◽  
pp. 1350-1353 ◽  
Author(s):  
Juan Juan Lu ◽  
Shen Guang Ge ◽  
Fu Wei Wan ◽  
Jing Hua Yu
Keyword(s):  
Quantum Dots ◽  
Thioglycolic Acid ◽  
Water Soluble ◽  
Molar Ratio ◽  
Core Shell ◽  
The Core ◽  
Cdte Qds ◽  
Quality Water ◽  
Synthesis Procedure ◽  
Pl Emission

This paper describes the synthesis of CdTe and CdTe/CdS core-shell quantum dots (QDs) in aqueous solution. The quantum dots are prepared by using thioglycolic acid (TGA) as stabilizers. The synthesis procedure is simple and controllable. Different sized CdTe QDs with tuned PL wavelengths from 550 to 640 nm was synthesized by controlling reaction time within 5 h in aqueous solutions at a temperature of 100 °C. We also investigated the influence of precursor Cd/Te molar ratio for the prepared QDs. It was showed that the core-shell CdTe/CdS QDs have larger photoluminescence (PL) emission intensity than the original CdTe QDs. The synthesized core-shell CdTe/ZnS QDs have high quality, water-soluble and will be useful in applications of biolabeling, biosensing, and imaging.

A CdTe–MPA quantum dot fluorescence enhancement flow method for chlorhexidine determination

2014 ◽  
Vol 6 (12) ◽  
pp. 4240-4246 ◽  
Author(s):  
João A. C. Barbosa ◽  
Vera L. R. G. Abreu ◽  
S. Sofia M. Rodrigues ◽  
Christian Frigerio ◽  
João L. M. Santos
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Fluorescence Enhancement ◽  
Water Soluble ◽  
Cdte Quantum Dots ◽  
Mercaptopropionic Acid ◽  
Flow Method

In this work the fluorescence enhancement that water-soluble CdTe quantum dots (QDs) capped with 3-mercaptopropionic acid (MPA) exhibit in the presence of a biguanide compound, chlorhexidine, was investigated.

Photoinduced fluorescence enhancement in colloidal CdSeTe∕ZnS core/shell quantum dots

2008 ◽  
Vol 92 (18) ◽  
pp. 183108 ◽  
Author(s):  
C. T. Yuan ◽  
W. C. Chou ◽  
D. S. Chuu ◽  
Y. N. Chen ◽  
C. A. Lin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fluorescence Enhancement ◽  
Core Shell

Design and Synthesis of Highly Luminescent Near-Infrared-Emitting Water-Soluble CdTe/CdSe/ZnS Core/Shell/Shell Quantum Dots

2009 ◽  
Vol 48 (20) ◽  
pp. 9723-9731 ◽  
Author(s):  
Wenjin Zhang ◽  
Guanjiao Chen ◽  
Jian Wang ◽  
Bang-Ce Ye ◽  
Xinhua Zhong
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Water Soluble ◽  
Core Shell ◽  
Design And Synthesis

Quenching of CdSe−ZnS Core−Shell Quantum Dot Luminescence by Water-Soluble Thiolated Ligands

2007 ◽  
Vol 111 (50) ◽  
pp. 18589-18594 ◽  
Author(s):  
Vladimir V. Breus ◽  
Colin D. Heyes ◽  
G. Ulrich Nienhaus
Keyword(s):  
Quantum Dot ◽  
Water Soluble ◽  
Core Shell
Sign in / Sign up

Export Citation Format

Share Document