Discriminative response of aliphatic and aromatic dithiol in the self-assembly of gold nanoparticles

RSC Advances ◽  
2013 ◽  
Vol 3 (36) ◽  
pp. 15622 ◽  
Author(s):  
Ranguwar Rajendra ◽  
Nirmalya Ballav
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
The Self ◽  
Discriminative Response

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

An IR modulator based on the self-assembly of gold nanoparticles on germanium

2014 ◽  
Vol 16 (36) ◽  
pp. 19402-19407 ◽  
Author(s):  
Harekrishna Ghosh ◽  
Ahmed Bouhekka ◽  
Thomas Bürgi
Keyword(s):  
Gold Nanoparticles ◽  
Valence Band ◽  
Self Assembly ◽  
Near Infrared ◽  
The Self ◽  
Band Edge ◽  
Infrared Light ◽  
Valence Band Edge ◽  
Near Infrared Light

Germanium modified with gold nanoparticles shows a drastically increased concentration of holes near the valence band edge upon illumination with visible or near infrared light.

scholarly journals Gold nanoparticles covalently assembled onto vesicle structures as possible biosensing platform

2016 ◽  
Vol 7 ◽  
pp. 655-663 ◽  
Author(s):  
M Fátima Barroso ◽  
M Alejandra Luna ◽  
Juan S Flores Tabares ◽  
Cristina Delerue-Matos ◽  
N Mariano Correa ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
Environmentally Friendly ◽  
Spherical Shape ◽  
The Self ◽  
Large Unilamellar Vesicle ◽  
Future Design ◽  
Pure Glycerol ◽  
The Future ◽  
Microscopy Techniques

In this contribution a strategy is shown to covalently immobilize gold nanoparticles (AuNPs) onto vesicle bilayers with the aim of using this nanomaterial as platform for the future design of immunosensors. A novel methodology for the self-assembly of AuNPs onto large unilamellar vesicle structures is described. The vesicles were formed with 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) and 1-undecanethiol (SH). After, the AuNPs photochemically synthesized in pure glycerol were mixed and anchored onto SH–DOPC vesicles. The data provided by voltammetry, spectrometry and microscopy techniques indicated that the AuNPs were successfully covalently anchored onto the vesicle bilayer and decorated vesicles exhibit a spherical shape with a size of 190 ± 10 nm. The developed procedure is easy, rapid and reproducible to start designing a possible immunosensor by using environmentally friendly procedures.

Vertical segregation in the self-assembly of nanoparticles at the liquid/air interface

Nanoscale ◽  
2014 ◽  
Vol 6 (24) ◽  
pp. 14662-14666 ◽  
Author(s):  
Yanming Liu ◽  
Yang Liu ◽  
Peng Tao ◽  
Wen Shang ◽  
Chengyi Song ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
The Self ◽  
Bimodal Size Distribution ◽  
Size Dependent ◽  
Colloidal Gold Nanoparticles ◽  
Air Interface ◽  
Vertical Segregation ◽  
One Step ◽  
The One

Vertical segregation was induced by the size-dependent charge neutralization during the one-step interfacial self-assembly of colloidal gold nanoparticles with bimodal size distribution.

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