Understanding the Self-Assembly of Proteins onto Gold Nanoparticles and Quantum Dots Driven by Metal-Histidine Coordination

ACS Nano ◽  
2013 ◽  
Vol 7 (11) ◽  
pp. 10197-10210 ◽  
Author(s):  
Fadi Aldeek ◽  
Malak Safi ◽  
Naiqian Zhan ◽  
Goutam Palui ◽  
Hedi Mattoussi
Keyword(s):  
Quantum Dots ◽  
Gold Nanoparticles ◽  
Self Assembly ◽  
The Self

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.

scholarly journals Cylindrical Micelles by the Self-Assembly of Crystalline-b-Coil Polyphosphazene-b-P2VP Block Copolymers. Stabilization of Gold Nanoparticles

Molecules ◽  
2019 ◽  
Vol 24 (9) ◽  
pp. 1772 ◽  
Author(s):  
Maria de los Angeles Cortes ◽  
Raquel de la Campa ◽  
Maria Luisa Valenzuela ◽  
Carlos Díaz ◽  
Gabino A. Carriedo ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Block Copolymers ◽  
Self Assembly ◽  
Cationic Polymerization ◽  
The Self ◽  
The Novel ◽  
Selective Solvent ◽  
The Core ◽  
Cylindrical Micelles ◽  
Main Factor

During the last number of years a variety of crystallization-driven self-assembly (CDSA) processes based on semicrystalline block copolymers have been developed to prepare a number of different nanomorphologies in solution (micelles). We herein present a convenient synthetic methodology combining: (i) The anionic polymerization of 2-vinylpyridine initiated by organolithium functionalized phosphane initiators; (ii) the cationic polymerization of iminophosphoranes initiated by –PR2Cl2; and (iii) a macromolecular nucleophilic substitution step, to prepare the novel block copolymers poly(bistrifluoroethoxy phosphazene)-b-poly(2-vinylpyridine) (PTFEP-b-P2VP), having semicrystalline PTFEP core forming blocks. The self-assembly of these materials in mixtures of THF (tetrahydrofuran) and 2-propanol (selective solvent to P2VP), lead to a variety of cylindrical micelles of different lengths depending on the amount of 2-propanol added. We demonstrated that the crystallization of the PTFEP at the core of the micelles is the main factor controlling the self-assembly processes. The presence of pyridinyl moieties at the corona of the micelles was exploited to stabilize gold nanoparticles (AuNPs).

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.

Stabilization of α-helices by the self-assembly of macrocyclic peptides on the surface of gold nanoparticles for molecular recognition

2013 ◽  
Vol 49 (69) ◽  
pp. 7617 ◽  
Author(s):  
Boram Kim ◽  
Sung-ju Choi ◽  
So-hee Han ◽  
Kang-Yell Choi ◽  
Yong-beom Lim
Keyword(s):  
Gold Nanoparticles ◽  
Molecular Recognition ◽  
Self Assembly ◽  
The Self ◽  
Macrocyclic Peptides

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.

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