scholarly journals Cucurbituril-mediated quantum dot aggregates formed by aqueous self-assembly for sensing applications

2019 ◽  
Vol 55 (38) ◽  
pp. 5495-5498 ◽  
Author(s):  
William J. Peveler ◽  
Hui Jia ◽  
Tiffany Jeen ◽  
Kelly Rees ◽  
Thomas J. Macdonald ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Self Assembly ◽  
Sensing Applications

Supramolecular ‘gluing’ of quantum dots is demonstrated with cucurbituril and we present the opportunity to create molecular host–guest sensing schemes.

Nanocrystalline Phosphors for Lighting and Detection Applications

2010 ◽  
Vol 654-656 ◽  
pp. 1130-1133 ◽  
Author(s):  
Christopher J. Summers ◽  
Hisham M. Menkara ◽  
Richard A. Gilstrap ◽  
Mazen Menkara ◽  
Thomas Morris
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Shell Growth ◽  
Stokes Shift ◽  
Thermal Quenching ◽  
High Sensitivity ◽  
In Situ Monitoring ◽  
White Leds ◽  
Sensing Applications ◽  
Improved Stability

We report the development of new nanoparticle phosphors and quantum dot structures designed for applications to enhance the color rendering and efficiency of high brightness white LEDs, as well as for bio-sensing applications. The intrinsic problem of self-absorption, high toxicity, and high sensitivity to thermal quenching of conventional quantum dot systems has prevented their adoption to LED devices. Doped Cd-free quantum dots may circumvent these issues due to their distinct Stokes shift and improved stability at high temperature. We report on the modification of Mn-doped ZnSe/ZnS core-shell quantum dots for application to the (blue diode + yellow emitter) white LED system. Band gap tuning for 460 nm excitation, inorganic shell growth and in-situ monitoring for enhanced efficiency, and analysis of thermal stability will are reported.

Shell thickness effects on quantum dot brightness and energy transfer

Nanoscale ◽  
2017 ◽  
Vol 9 (42) ◽  
pp. 16446-16458 ◽  
Author(s):  
Margaret Chern ◽  
Thuy T. Nguyen ◽  
Andrew H. Mahler ◽  
Allison M. Dennis
Keyword(s):  
Quantum Dots ◽  
Energy Transfer ◽  
Quantum Dot ◽  
Shell Thickness ◽  
Sensing Applications

CdSe/xCdS/ZnS thick-shelled ‘giant’ quantum dots are exceptionally bright as well as effective as energy transfer donors for sensing applications.

SELF-ORGANIZED QUANTUM DOTS

2002 ◽  
Vol 12 (01) ◽  
pp. 45-78 ◽  
Author(s):  
A. R. WOLL ◽  
P. RUGHEIMER ◽  
M. G. LAGALLY
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Self Assembly ◽  
The Self ◽  
Experimental Results ◽  
Size Distributions ◽  
Ongoing Research ◽  
Kinetics And Thermodynamics ◽  
Self Organized ◽  
Formation And Evolution

We review the concepts and principal experimental results pertaining to the self-assembly and self-ordering of quantum dots in semiconductor systems. We focus on the kinetics and thermodynamics of the formation and evolution of coherently strained 3D islands, and the effects of strain on nucleation, growth, and island shape. We also discuss ongoing research on methods to control the density, size, and size distributions of strained islands, both within a single strained layer and in quantum dot (QD) multilayers.

scholarly journals One-pot synthesis of graphene quantum dots and simultaneous nanostructured self-assembly via a novel microwave-assisted method: impact on triazine removal and efficiency monitoring

RSC Advances ◽  
2018 ◽  
Vol 8 (52) ◽  
pp. 29939-29946 ◽  
Author(s):  
Beatriz Fresco-Cala ◽  
M. Laura Soriano ◽  
Alice Sciortino ◽  
Marco Cannas ◽  
Fabrizio Messina ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Self Assembly ◽  
Graphene Quantum Dots ◽  
One Pot ◽  
Graphene Quantum Dot ◽  
Microwave Assisted ◽  
Microwave Reaction ◽  
One Step ◽  
Microwave Assisted Method

Graphene quantum dot (GQDs) assemblies from a one-step microwave reaction as bifunctional materials in remediation of triazines.

A self-assembly aptasensor based on thick-shell quantum dots for sensing of ochratoxin A

Nanoscale ◽  
2016 ◽  
Vol 8 (7) ◽  
pp. 4127-4133 ◽  
Author(s):  
Xianfeng Chu ◽  
Xiaowen Dou ◽  
Ruizheng Liang ◽  
Menghua Li ◽  
Weijun Kong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Ochratoxin A ◽  
Self Assembly ◽  
Thick Shell ◽  
Self Assembling

A tunable-valency self-assembling aptasensor based on a thick-shell quantum dot was fabricated for ochratoxin A (OTA).

scholarly journals pH-Responsive quantum dots (RQDs) that combine a fluorescent nanoparticle with a pH-sensitive dye

2014 ◽  
Vol 16 (46) ◽  
pp. 25255-25257 ◽  
Author(s):  
S. Ast ◽  
P. J. Rutledge ◽  
M. H. Todd
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Self Assembly ◽  
Ph Sensitive ◽  
Ph Responsive ◽  
Simple Process ◽  
Fluorescent Nanoparticle

A quantum dot conjugated to a dye through an experimentally simple process of self-assembly exhibits an enhanced emission when the dye is attached, and this effect is pH-sensitive.

Growth of a three-dimensional anisotropic lattice of Ge quantum dots in an amorphous alumina matrix

2013 ◽  
Vol 46 (3) ◽  
pp. 709-715 ◽  
Author(s):  
Maja Buljan ◽  
Olga Roshchupkina ◽  
Ana Šantić ◽  
Václav Holý ◽  
Carsten Baehtz ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Self Assembly ◽  
Three Dimensional ◽  
Sample Surface ◽  
Material Surface ◽  
Simple Method ◽  
Sputtering Deposition ◽  
Anisotropic Lattice ◽  
Ge Quantum Dots

Simple processes for the preparation of semiconductor quantum dot lattices embedded in dielectric amorphous matrices play an important role in various nanotechnology applications. Of particular interest are quantum dot lattices with properties that differ significantly in different directions parallel to the material surface. Here, a simple method is demonstrated for the fabrication of an anisotropic lattice of Ge quantum dots in an amorphous Al2O3matrix by a self-assembly process. A specific deposition geometry with an oblique incidence of the Ge and Al2O3adparticles was used during magnetron sputtering deposition to achieve the desired anisotropy. The observed Ge quantum dot ordering is explained by a combination of directional diffusion of adparticles from the Ge and Al2O3targets and a shadowing process which occurs during deposition as a result of the specific surface morphology. The prepared material shows a strong anisotropy of the electrical conductivity in different directions parallel to the sample surface.

Fabrication and properties of a supramolecular hybrid hydrogel doped with CdTe quantum dots

RSC Advances ◽  
2015 ◽  
Vol 5 (72) ◽  
pp. 58746-58754 ◽  
Author(s):  
Xi Xie ◽  
Dong Ma ◽  
Li-Ming Zhang
Keyword(s):  
Quantum Dots ◽  
Block Copolymer ◽  
Quantum Dot ◽  
Self Assembly ◽  
Cdte Quantum Dots ◽  
Amphiphilic Block Copolymer ◽  
Host Molecule ◽  
Supramolecular Hydrogel ◽  
Hybrid Hydrogel ◽  
Cdte Quantum Dot

A fluorescent supramolecular hydrogel was fabricated based on the host–guest self-assembly between the amphiphilic block copolymer on the CdTe quantum dot (QD) surface and the cyclic oligosaccharide host molecule, α-cyclodextrin (α-CD).

scholarly journals Facile and efficient preparation of high-quality black phosphorus quantum dot films for sensing applications

RSC Advances ◽  
2020 ◽  
Vol 10 (23) ◽  
pp. 13379-13385
Author(s):  
Yan Zhao ◽  
Jie Huang ◽  
Ran Zhang ◽  
Yinzhou Yan ◽  
Yongzhe Zhang
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Black Phosphorus ◽  
High Quality ◽  
Liquid Exfoliation ◽  
Sensing Applications ◽  
Ultrasonic Assisted ◽  
Black Phosphorus Quantum Dots

In this study, black phosphorus quantum dots (BPQDs) are synthesized by improved ultrasonic-assisted liquid exfoliation.

BIOLOGICALLY-INSPIRED CHEMICALLY-DIRECTED SELF-ASSEMBLY OF SEMICONDUCTOR QUANTUM-DOT-BASED SYSTEMS: PHONON-HOLE SCATTERING IN DNA BOUND TO DNA-QUANTUM-DOT COMPLEXES

2006 ◽  
Vol 16 (02) ◽  
pp. 659-668 ◽  
Author(s):  
MICHAEL A. STROSCIO ◽  
MITRA DUTTA
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Self Assembly ◽  
Directed Assembly ◽  
Semiconductor Quantum Dots ◽  
Dna Molecules ◽  
Biologically Inspired ◽  
Absorption And Emission ◽  
Semiconductor Quantum Dot ◽  
Phonon Absorption

This paper focuses on: (a) the concept and use of chemically-directed assembly to integrate nanoscale quantum dots at densities above 1017 cm-3 with biomolecular interconnecting structures; and (b) the phenomena of phonon absorption and emission from holes propagating in DNA molecules that are bond on one terminus to semiconductor quantum dots.

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