Autocatalytic amplified detection of DNA based on a CdSe quantum dot/folic acid electrochemiluminescence energy transfer system

The Analyst ◽  
2015 ◽  
Vol 140 (1) ◽  
pp. 79-82 ◽  
Author(s):  
Guifen Jie ◽  
Yingqiang Qin ◽  
Qingmin Meng ◽  
Jialin Wang
Keyword(s):  
Energy Transfer ◽  
Folic Acid ◽  
Quantum Dot ◽  
Transfer System ◽  
Cdse Qds ◽  
System P ◽  
Cdse Quantum Dot ◽  
Autocatalytic System ◽  
First Time

Electrochemiluminescence energy transfer from CdSe QDs to folic acid was applied for the first time for amplified detection of DNA by a DNAzyme autocatalytic system.

Facilely controlling the Förster energy transfer efficiency of dendron encapsulated conjugated organic molecular wire–CdSe quantum dot nanostructures

2015 ◽  
Vol 39 (3) ◽  
pp. 1916-1921 ◽  
Author(s):  
Hua-Yan Si ◽  
Le-Jia Wang ◽  
Wen-Jie Feng ◽  
Hao-Li Zhang ◽  
Hao Zhu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Energy Transfer Efficiency ◽  
Transfer Efficiency ◽  
Molecular Wire ◽  
Cdse Qds ◽  
Förster Energy Transfer ◽  
Cdse Quantum Dot

On Den-OPE–CdSe nanostructures, as the size of the dendrimer increases, the energy transfer efficiency from Den-OPEs to CdSe QDs enhances.

scholarly journals A Suitable Polysulfide Electrolyte for CdSe Quantum Dot-Sensitized Solar Cells

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
H. K. Jun ◽  
M. A. Careem ◽  
A. K. Arof
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Liquid Electrolyte ◽  
Solvent Ratio ◽  
Cdse Qds ◽  
Pure Ethanol ◽  
Cell Efficiency ◽  
Polysulfide Electrolyte ◽  
Cdse Quantum Dot ◽  
Sensitized Solar Cells

A polysulfide liquid electrolyte is developed for the application in CdSe quantum dot-sensitized solar cells (QDSSCs). A solvent consisting of ethanol and water in the ratio of 8 : 2 by volume has been found as the optimum solvent for preparing the liquid electrolytes. This solvent ratio appears to give higher cell efficiency compared to pure ethanol or water as a solvent. Na2S and S give rise to a good redox couple in the electrolyte for QDSSC operation, and the optimum concentrations required are 0.5 M and 0.1 M, respectively. Addition of guanidine thiocyanate (GuSCN) to the electrolyte further enhances the performance. The QDSSC with CdSe sensitized electrode prepared using 7 cycles of successive ionic layer adsorption and reaction (SILAR) produces an efficiency of 1.41% with a fill factor of 44% on using a polysulfide electrolyte of 0.5 M Na2S, 0.1 M S, and 0.05 M GuSCN in ethanol/water (8 : 2 by volume) under the illumination of 100 mW/cm2white light. Inclusion of small amount of TiO2nanoparticles into the electrolyte helps to stabilize the polysulfide electrolyte and thereby improve the stability of the CdSe QDSSC. The CdSe QDs are also found to be stable in the optimized polysulfide liquid electrolyte.

Electronic Energy Transfer in CdSe Quantum Dot Solids

1996 ◽  
Vol 76 (9) ◽  
pp. 1517-1520 ◽  
Author(s):  
C. R. Kagan ◽  
C. B. Murray ◽  
M. Nirmal ◽  
M. G. Bawendi
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Electronic Energy ◽  
Electronic Energy Transfer ◽  
Cdse Quantum Dot

scholarly journals Discrimination between FRET and non-FRET quenching in a photochromic CdSe quantum dot/dithienylethene dye system

Nanoscale ◽  
2014 ◽  
Vol 6 (23) ◽  
pp. 14200-14203 ◽  
Author(s):  
Lars Dworak ◽  
Andreas J. Reuss ◽  
Marc Zastrow ◽  
Karola Rück-Braun ◽  
Josef Wachtveitl
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Cdse Quantum Dots ◽  
System P ◽  
Cdse Quantum Dot

Reversible switching between the FRET and the non-FRET state in a highly defined nanostructure composed of CdSe quantum dots and a photoswitch is reported.

Correlated blinking via time dependent energy transfer in single CdSe quantum dot-dye nanoassemblies

2013 ◽  
Vol 572 ◽  
pp. 90-95 ◽  
Author(s):  
Frank Gerlach ◽  
Daniela Täuber ◽  
Christian von Borczyskowski
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Time Dependent ◽  
Cdse Quantum Dot

CdSe Quantum Dot-Sensitized Solar Cell: Effect of Size and Attach Mode of Quantum Dot

2015 ◽  
Vol 30 ◽  
pp. 78-85 ◽  
Author(s):  
Fei Yan Shao ◽  
Ming Li ◽  
Jian Wen Yang ◽  
Yong Pin Liu ◽  
Ling Zhi Zhang
Keyword(s):  
Reaction Time ◽  
Quantum Dot ◽  
Conversion Efficiency ◽  
Visible Region ◽  
Cdse Qds ◽  
Band Shift ◽  
Visible Absorption ◽  
Transmission Electron ◽  
Cdse Quantum Dot ◽  
Fluorescence Spectrometer

Different size of colloidal CdSe quantum dot (QD) was synthesized through a simple solvothermal route and their structural, morphological and optical properties were characterized with X-ray diffraction (XRD), transmission electron microscope (TEM), UV-visible absorption spectroscopy and fluorescence spectrometer. XRD and TEM measurement confirmed the formation of CdSe QDs. The red shift of absorption and fluorescence peaks indicated that the size of CdSe QDs increased with prolonging reaction time. The size of QDs varied from 2.2 nm to 3.4 nm by varying reaction time from 1 h to 7 h. The absorption spectra of CdSe/TiO2 electrodes proved that the loading of CdSe QDs on TiO2 can be greatly improved by MPA pretreatment. The effect of size of CdSe QDs on the performance of CdSe QDs sensitized solar cells was investigated. Due to the change of absorption range in the visible region and the conduction band shift for different size of CdSe, the photo-electric power conversion efficiency first increased and then decreased with increasing size of CdSe. The devices fabricated with 3.1 nm diameter CdSe nanoparticles exhibited the highest conversion efficiency of 0.70% under AM 1.5 G irradiation (100 mW cm−2).

Electronic Energy Transfer in CdSe Quantum Dot Solids

1996 ◽  
Vol 76 (16) ◽  
pp. 3043-3043 ◽  
Author(s):  
C. R. Kagan ◽  
C. B. Murray ◽  
M. Nirmal ◽  
M. G. Bawendi
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Electronic Energy ◽  
Electronic Energy Transfer ◽  
Cdse Quantum Dot

The electron injection rate in CdSe quantum dot sensitized solar cells: from a bifunctional linker and zinc oxide morphology

Nanoscale ◽  
2017 ◽  
Vol 9 (43) ◽  
pp. 16806-16816 ◽  
Author(s):  
Wei-Lu Ding ◽  
Xing-Liang Peng ◽  
Zhu-Zhu Sun ◽  
Ze-Sheng Li
Keyword(s):  
Zinc Oxide ◽  
Solar Cells ◽  
Quantum Dot ◽  
Electron Injection ◽  
Injection Rate ◽  
Cdse Qds ◽  
Oxide Morphology ◽  
Cdse Quantum Dot ◽  
Sensitized Solar Cells

L1 mediated ZnO-NWs and CdSe QDs achieving an ultrafast electron injection on the order of hundreds of femtoseconds.

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