scholarly journals Surface Ligand Effects on Metal-Affinity Coordination to Quantum Dots: Implications for Nanoprobe Self-Assembly

2010 ◽  
Vol 21 (7) ◽  
pp. 1160-1170 ◽  
Author(s):  
Allison M. Dennis ◽  
David C. Sotto ◽  
Bing C. Mei ◽  
Igor L. Medintz ◽  
Hedi Mattoussi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Self Assembly ◽  
Ligand Effects ◽  
Metal Affinity ◽  
Surface Ligand

Kinetics of Metal-Affinity Driven Self-Assembly between Proteins or Peptides and CdSe−ZnS Quantum Dots

2007 ◽  
Vol 111 (31) ◽  
pp. 11528-11538 ◽  
Author(s):  
Kim E. Sapsford ◽  
Thomas Pons ◽  
Igor L. Medintz ◽  
Seiichiro Higashiya ◽  
Florence M. Brunel ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Self Assembly ◽  
Metal Affinity ◽  
Kinetics Of

Charge Effect on the Quantum Dots-Peptide Self-Assembly Using Fluorescence Coupled Capillary Electrophoresis

2016 ◽  
Vol 16 (4) ◽  
pp. 4035-4039 ◽  
Author(s):  
Jianhao Wang ◽  
Jingyan Li ◽  
Yiwan Teng ◽  
Yanhua Bi ◽  
Wei Hu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Capillary Electrophoresis ◽  
Self Assembly ◽  
Binding Sites ◽  
Systematic Investigation ◽  
Assembly Process ◽  
Charge Effect ◽  
Metal Affinity ◽  
Assembly Kinetics

We present a molecular characterization of metal-affinity driven self-assembly between CdSe–ZnS quantum dots and a series of hexahistidine peptides with different charges. In particular, we utilized fluorescence coupled capillary electrophoresis to test the self-assembly process of quantum dots with peptides in solution. Four peptides with different charges can be efficiently separated by fluorescence coupled capillary electrophoresis. The migration time appeared to be influenced by the charges of the peptide. In addition, the kinetics of self-assembly process of quantum dots with one of the peptides manifested a bi-phasic kinetics followed by a saturating stage. This work revealed that there exist two types of binding sites on the surface of quantum dots for peptide 1: one type termed “high priority” binding site and a “low priority” site which is occupied after the first binding sites are fully occupied. The total self-assembly process finishes in solution within 80 s. Our work represents the systematic investigation of the details of self-assembly kinetics utilizing high-resolution fluorescence coupled capillary electrophoresis. The charge effect of peptide coating quantum dots provides a new way of preparing bioprobes.

Carbon Nanotubes, Quantum Dots and Dendrimers as Potential Nanodevices for Nanotechnology Drug Delivery Systems

2013 ◽  
Vol 6 (3) ◽  
pp. 2113-2124
Author(s):  
Prashant Malik ◽  
Neha Gulati ◽  
Raj Kaur Malik ◽  
Upendra Nagaich
Keyword(s):  
Carbon Nanotubes ◽  
Drug Delivery ◽  
Quantum Dots ◽  
Self Assembly ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Atomic Scale ◽  
Sustained Drug Delivery ◽  
Pharmaceutical Nanotechnology ◽  
Conventional Device

Nanotechnology deal with the particle size in nanometers. Nanotechnology is ranging from extensions of conventional device physics to completely new approaches based upon molecular self assembly, from developing new materials with dimensions on the nanoscale to direct control of matter on the atomic scale. In nanotechnology mainly three types of nanodevices are described: carbon nanotubes, quantum dots and dendrimers. It is a recent technique used as small size particles to treat many diseases like cancer, gene therapy and used as diagnostics. Nanotechnology used to formulate targeted, controlled and sustained drug delivery systems. Pharmaceutical nanotechnology embraces applications of nanoscience to pharmacy as nanomaterials and as devices like drug delivery, diagnostic, imaging and biosensor materials. Pharmaceutical nanotechnology has provided more fine tuned diagnosis and focused treatment of disease at a molecular level.    

Photoinduced Self‐Assembly of Carbon Nitride Quantum Dots

2021 ◽  
Author(s):  
Zheng Xing ◽  
Kaituo Dong ◽  
Nick G Pavlopoulos ◽  
Yuexing Chen ◽  
Lilac Amirav
Keyword(s):  
Quantum Dots ◽  
Self Assembly ◽  
Carbon Nitride

scholarly journals Nucleation of Ga droplets self-assembly on GaAs(111)A substrates

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Artur Tuktamyshev ◽  
Alexey Fedorov ◽  
Sergio Bietti ◽  
Stefano Vichi ◽  
Riccardo Tambone ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Size Distribution ◽  
Self Assembly ◽  
Cluster Size ◽  
Droplet Size Distribution ◽  
Local Environment ◽  
The Self ◽  
Critical Cluster ◽  
Droplet Nucleation ◽  
High Degree

AbstractWe investigated the nucleation of Ga droplets on singular GaAs(111)A substrates in the view of their use as the seeds for the self-assembled droplet epitaxial quantum dots. A small critical cluster size of 1–2 atoms characterizes the droplet nucleation. Low values of the Hopkins-Skellam index (as low as 0.35) demonstrate a high degree of a spatial order of the droplet ensemble. Around $$350\,^{\circ }\hbox {C}$$ 350 ∘ C the droplet size distribution becomes bimodal. We attribute this observation to the interplay between the local environment and the limitation to the adatom surface diffusion introduced by the Ehrlich–Schwöbel barrier at the terrace edges.

Self-assembly of CdSe/CdS quantum dots by hydrogen bonding on Au surfaces for photoreception

2003 ◽  
pp. 2278 ◽  
Author(s):  
Jing Tang ◽  
Henrik Birkedal ◽  
Eric W. McFarland ◽  
Galen D. Stucky
Keyword(s):  
Quantum Dots ◽  
Hydrogen Bonding ◽  
Self Assembly ◽  
Cds Quantum Dots

Evaporation-induced self-assembly of quantum dots-based concentric rings on polymer-based nanocomposite films

Soft Matter ◽  
2016 ◽  
Vol 12 (40) ◽  
pp. 8285-8296 ◽  
Author(s):  
Shaofu Zhang ◽  
Weiling Luan ◽  
Qixin Zhong ◽  
Shaofeng Yin ◽  
Fuqian Yang
Keyword(s):  
Quantum Dots ◽  
Self Assembly ◽  
Nanocomposite Films ◽  
Evaporation Induced Self Assembly
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