Solid-state chemiluminescence assay for ultrasensitive detection of antimony using on-vial immobilization of CdSe quantum dots combined with liquid–liquid–liquid microextraction

2013 ◽  
Vol 788 ◽  
pp. 114-121 ◽  
Author(s):  
Isabel Costas-Mora ◽  
Vanesa Romero ◽  
Isela Lavilla ◽  
Carlos Bendicho
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
Ultrasensitive Detection ◽  
Cdse Quantum Dots ◽  
Chemiluminescence Assay ◽  
Liquid Microextraction

scholarly journals CdSe Quantum Dots Sensitized Mesoporous TiO2Solar Cells with CuSCN as Solid-State Electrolyte

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Guanbi Chen ◽  
Lei Wang ◽  
Yu Zou ◽  
Xia Sheng ◽  
Hongjuan Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solid State ◽  
Barrier Layer ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Cdse Quantum Dots ◽  
Solid State Electrolyte ◽  
Capping Agents ◽  
Organic Capping

Mesoporous TiO2is functionalized by 3-mercaptopropyl trimethyoxysilane (MPTMS) to anchor CdSe quantum dots (QDs). The resulting TiO2/CdSe is combined with solid-state electrolyte (CuSCN) to form solar cells. It is found that the efficiency of electron injection from QDs to TiO2can be improved owing to the substitution of the long chains of organic capping agents at the surface of QDs with MPTMS. The hydrolyzate of MPTMS forms an insulating barrier layer to reduce the recombination at the TiO2/CdSe interface, leading to the increase of open-circuit voltage (Voc).

Modification of Blinking Statistics in Solid State Quantum Dot/Conjugated Organic Polymer Composite Nanostructures

2006 ◽  
Vol 959 ◽  
Author(s):  
Nathan I Hammer ◽  
Kevin T Early ◽  
Michael Y Odoi ◽  
Ravisubhash Tangirala ◽  
Kevin Sill ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
Quantum Dot ◽  
Single Molecule ◽  
Fluorescence Emission ◽  
Phase Segregation ◽  
Organic Polymer ◽  
Cdse Quantum Dots ◽  
The Stability ◽  
Fluorescence Intermittency

ABSTRACTFluorescence intermittency, or “blinking” in quantum dot systems has been the subject of great interest since the first observation of this phenomenon nearly 10 years ago. The stability of quantum dot fluorescence emission is especially important in the context of photovoltaic, optoelectronic, and biological applications, where device performance, or the ability to track labeled particles, is affected adversely by fluorescence intermittency. Single-molecule spectroscopy combined with atomic force microscopy measurements reveal that CdSe quantum dots functionalized with oligo(phenylene vinylene), OPV, ligands exhibit modified optical properties such as suppression of blinking when compared to conventional TOPO covered or ZnS-capped CdSe quantum dots. The blinking suppression is shown to be highly sensitive to the degree of ligand coverage on the quantum dot surface and this effect is interpreted as resulting from charge transport from photoexcited OPV into vacant trap sites on the quantum dot surface. This direct surface derivatization of quantum dots with organic ligands also enables a “tunable” quantum dot surface that allows dispersion of quantum dots in a variety of polymer supported thin films without phase segregation. This facilitates straightforward inclusion of these new hybrid materials into solid state formats and suggests exciting new applications of composite quantum dot/organic systems in optoelectronic systems.

A quantum dot based electrochemiluminescent immunosensor for the detection of pg level phenylethanolamine A using gold nanoparticles as substrates and electron transfer accelerators

The Analyst ◽  
2014 ◽  
Vol 139 (17) ◽  
pp. 4365-4372 ◽  
Author(s):  
Panpan Yan ◽  
Jing Zhang ◽  
Qinghui Tang ◽  
Anping Deng ◽  
Jianguo Li
Keyword(s):  
Quantum Dots ◽  
Gold Nanoparticles ◽  
Electron Transfer ◽  
Quantum Dot ◽  
Ultrasensitive Detection ◽  
Cdse Quantum Dots

This study reports the development of an electrochemiluminescent (ECL) immunosensor for ultrasensitive detection of phenylethanolamine A (PA) based on CdSe quantum dots (QDs) and gold nanoparticles (GNPs).

Ultrafast fs coherent excitonic dynamics in CdSe quantum dots assemblies addressed and probed by 2D electronic spectroscopy

2021 ◽  
Vol 154 (1) ◽  
pp. 014301
Author(s):  
Elisabetta Collini ◽  
Hugo Gattuso ◽  
R. D. Levine ◽  
F. Remacle
Keyword(s):  
Quantum Dots ◽  
Electronic Spectroscopy ◽  
Cdse Quantum Dots

scholarly journals One pot synthesis of bi-linker stabilised CdSe quantum dots

2010 ◽  
Vol 245 ◽  
pp. 012067 ◽  
Author(s):  
I Concina ◽  
M M Natile ◽  
A Braga ◽  
A Vomiero ◽  
V Morandi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cdse Quantum Dots ◽  
One Pot ◽  
One Pot Synthesis
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