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.

Construction of a pH-sensitive self-assembly in aqueous solutions based on a dansyl-modified β-cyclodextrin

Soft Matter ◽  
2021 ◽  
Author(s):  
Bing Jiang ◽  
Yu Liu ◽  
Linlin Zhao ◽  
Li Zhao ◽  
Ce Wang ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Self Assembly ◽  
Ph Sensitive ◽  
Ph Responsive ◽  
Ph Range

Here we present a pH-responsive self-assembly based on a β-cyclodextrin (β-CD) derivative bearing a dansyl terminus (βCD-C6-Dns). Vesicular structures were formed over the entire studied pH range (8.5-0.7); however, the...

Recovery and redispersion of gold nanoparticles using the self-assembly of a pH sensitive zwitterionic amphiphile

2014 ◽  
Vol 50 (85) ◽  
pp. 12933-12936 ◽  
Author(s):  
Clara Morita-Imura ◽  
Yoshiro Imura ◽  
Takeshi Kawai ◽  
Hitoshi Shindo
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
Au Nanoparticles ◽  
Ph Sensitive ◽  
The Self ◽  
Ph Responsive

The pH-responsive self-assembly of a zwitterionic amphiphile was expanded to the recovery of gold (Au) nanoparticles. Multilayered lamellae were incorporated into the nanoparticles. Redispersion of nanoparticles was achieved by the transition of self-assembly based on pH.

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.

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.

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).

An rGQD/chitosan nanocomposite-based pH-sensitive probe: application to sensing in urease activity assays

2019 ◽  
Vol 43 (34) ◽  
pp. 13398-13407
Author(s):  
Fanping Shi ◽  
Danyi Shang ◽  
Zonghua Wang
Keyword(s):  
Quantum Dots ◽  
Real Time ◽  
Urease Activity ◽  
Graphene Quantum Dots ◽  
Ph Sensitive ◽  
Fluorescence Properties ◽  
Ph Responsive ◽  
Real Time Monitoring ◽  
The Real ◽  
Reduced Graphene

We used the intriguing pH-responsive protonation/deprotonation transitions of chitosan and the fluorescence properties of reduced graphene quantum dots to design a novel pH probe and realize the real-time monitoring of urease activity.

scholarly journals ZnO quantum dots modified bioactive glass nanoparticles with pH-sensitive release of Zn ions, fluorescence, antibacterial and osteogenic properties

2016 ◽  
Vol 4 (48) ◽  
pp. 7936-7949 ◽  
Author(s):  
Kai Zheng ◽  
Miao Lu ◽  
Bogdan Rutkowski ◽  
Xinyi Dai ◽  
Yuyun Yang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Antibacterial Activity ◽  
Quantum Dot ◽  
Bioactive Glass ◽  
Ph Sensitive ◽  
Zno Quantum Dots ◽  
Zn Ions

Zn containing bioactive glass nanoparticles fabricated by ZnO quantum dot coating of BG nanoparticles exhibit apatite forming ability, antibacterial activity and non-cytotoxicity.

Facile fabrication of pH-sensitive peptide–inorganic hollow spheres using a template-free method

2017 ◽  
Vol 5 (24) ◽  
pp. 4569-4573 ◽  
Author(s):  
Huiqin Yang ◽  
Deqiang Chen ◽  
Ruiqiu Xiao ◽  
Hongzhen Guo ◽  
Xiang Liu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Phosphotungstic Acid ◽  
Hollow Spheres ◽  
Ph Sensitive ◽  
The Self ◽  
Ph Responsive ◽  
Facile Fabrication ◽  
Template Free

The self-assembly of a heptapeptide and phosphotungstic acid into hollow spheres with pH-responsive properties was achieved using a template-free method.

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.

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