Size and Morphology Adjustment of PVP-Stabilized Silver and Gold Nanocrystals Synthesized by Hydrodynamic Assisted Self-Assembly

2009 ◽  
Vol 113 (20) ◽  
pp. 8595-8600 ◽  
Author(s):  
Licheng Liu ◽  
Ting Wei ◽  
Xiao Guan ◽  
Xuehong Zi ◽  
Hong He ◽  
...  
Keyword(s):  
Self Assembly ◽  
Gold Nanocrystals ◽  
Size And Morphology

Self-assembled structures of polyhedral gold nanocrystals: shape-directive arrangement and structure-dependent plasmonic enhanced characteristics

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57320-57326 ◽  
Author(s):  
Yanting Liu ◽  
Jun Zhou ◽  
Lu Zhou ◽  
Edwin Yue-Bun Pun ◽  
Tao Jiang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Plasmonic Enhancement ◽  
Casting Method ◽  
Antenna Effect ◽  
Gold Nanocrystals ◽  
Different Types ◽  
Self Assembled

Self-assembly structures of different types of polyhedral nanocrystals through drop casting method and their plasmonic enhancement characteristics and SERS performances due to the nano-antenna effect.

Plasmonic Vesicles of Amphiphilic Gold Nanocrystals: Self-Assembly and External-Stimuli-Triggered Destruction

2011 ◽  
Vol 133 (28) ◽  
pp. 10760-10763 ◽  
Author(s):  
Jibin Song ◽  
Lin Cheng ◽  
Aiping Liu ◽  
Jun Yin ◽  
Min Kuang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Gold Nanocrystals ◽  
External Stimuli

scholarly journals Tuning Size and Morphology of mPEG-b-p(HPMA-Bz) Copolymer Self-Assemblies Using Microfluidics

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2572
Author(s):  
Jaleesa Bresseleers ◽  
Mahsa Bagheri ◽  
Coralie Lebleu ◽  
Sébastien Lecommandoux ◽  
Olivier Sandre ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Size Difference ◽  
Flow Rates ◽  
Polymer Vesicles ◽  
Attractive Option ◽  
Self Assembled ◽  
Size And Morphology ◽  
Poly Ethylene ◽  
Careful Design

The careful design of nanoparticles, in terms of size and morphology, is of great importance to developing effective drug delivery systems. The ability to precisely tailor nanoparticles in size and morphology during polymer self-assembly was therefore investigated. Four poly(ethylene glycol)-b-poly(N-2-benzoyloxypropyl methacrylamide) mPEG-b-p(HPMA-Bz) block copolymers with a fixed hydrophilic block of mPEG 5 kDa and a varying molecular weight of the hydrophobic p(HPMA-Bz) block (A: 17.1, B: 10.0, C: 5.2 and D: 2.7 kDa) were self-assembled into nanoparticles by nanoprecipitation under well-defined flow conditions, using microfluidics, at different concentrations. The nanoparticles from polymer A, increased in size from 55 to 90 nm using lower polymer concentrations and slower flow rates and even polymer vesicles were formed along with micelles. Similarly, nanoparticles from polymer D increased in size from 35 to 70 nm at slower flow rates and also formed vesicles along with micelles, regardless of the used concentration. Differently, polymers B and C mainly self-assembled into micelles at the different applied flow rates with negligible size difference. In conclusion, this study demonstrates that the self-assembly of mPEG-b-p(HPMA-Bz) block copolymers can be easily tailored in size and morphology using microfluidics and is therefore an attractive option for further scaled-up production activities.

UV light-induced self-assembly of gold nanocrystals into chains and networks in a solution of silver nitrate

2013 ◽  
Vol 24 (5) ◽  
pp. 055601 ◽  
Author(s):  
Shu Jun Zhen ◽  
Zhong Yue Zhang ◽  
Na Li ◽  
Zhi Dong Zhang ◽  
Jian Wang ◽  
...  
Keyword(s):  
Silver Nitrate ◽  
Self Assembly ◽  
Uv Light ◽  
Gold Nanocrystals

scholarly journals A facile strategy for manipulating micellar size and morphology through intramolecular cross-linking of amphiphilic block copolymers

2017 ◽  
Vol 8 (23) ◽  
pp. 3647-3656 ◽  
Author(s):  
Ryoto Tanaka ◽  
Kodai Watanabe ◽  
Takuya Yamamoto ◽  
Kenji Tajima ◽  
Takuya Isono ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Self Assembly ◽  
Amphiphilic Block Copolymers ◽  
Amphiphilic Block Copolymer ◽  
Cross Linking ◽  
Micellar Size ◽  
System P ◽  
Assembly Behavior ◽  
Size And Morphology

The effect of intramolecular cross-linking on aqueous self-assembly behavior was systematically investigated based on an amphiphilic block copolymer system.

Self-assembly of metal/semiconductor heterostructures via ligand engineering: unravelling the synergistic dual roles of metal nanocrystals toward plasmonic photoredox catalysis

Nanoscale ◽  
2017 ◽  
Vol 9 (43) ◽  
pp. 16922-16936 ◽  
Author(s):  
Ke-Yi Jiang ◽  
Ya-Li Weng ◽  
Si-Yi Guo ◽  
Yan Yu ◽  
Fang-Xing Xiao
Keyword(s):  
Self Assembly ◽  
Semiconductor Heterostructures ◽  
Photoredox Catalysis ◽  
Dual Roles ◽  
Gold Nanocrystals ◽  
Metal Nanocrystals ◽  
Electron Withdrawal ◽  
Withdrawal Effects

A cooperative synergy arising from the SPR and electron-withdrawal effects of gold nanocrystals was simultaneously and unambiguously unraveled for plasmonic photoredox catalysis.

Freezing the self-assembly process of gold nanocrystals

2012 ◽  
Vol 48 (11) ◽  
pp. 1677-1679 ◽  
Author(s):  
Abdennour Abbas ◽  
Limei Tian ◽  
Ramesh Kattumenu ◽  
Abigail Halim ◽  
Srikanth Singamaneni
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Assembly Process ◽  
Gold Nanocrystals

Self-Assembly of Faceted Gold Nanocrystals for Surface-Enhanced Raman Scattering Application

2019 ◽  
Vol 123 (40) ◽  
pp. 24714-24722 ◽  
Author(s):  
Shuang Lin ◽  
Xiang Lin ◽  
Yuxin Shang ◽  
Siqingaowa Han ◽  
Wuliji Hasi ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Self Assembly ◽  
Surface Enhanced Raman Scattering ◽  
Gold Nanocrystals ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Periodically ordered nanohetero inorganic structures of nanoparticles, nanorods and layers in a matrix from self-assembled block copolymers

2014 ◽  
Vol 1706 ◽  
Author(s):  
Hiroaki Wakayama ◽  
Hirotaka Yonekura ◽  
Yasuaki Kawai
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Three Dimensional ◽  
Functional Materials ◽  
Domain Size ◽  
Great Promise ◽  
Layer By Layer ◽  
Simple Method ◽  
Self Assembled ◽  
Size And Morphology

ABSTRACTPeriodically ordered nanohetero inorganic structures offer great promise due to their unique electric, ionic, magnetic, and photonic properties. Many studies have focused on the formation of periodically ordered nano-hetero inorganic structures through layer-by-layer adsorption, sputtering, and self-assembly methods. However, the construction of three-dimensional periodically ordered nanohetero inorganic structures with desired sizes and morphologies remains a great challenge. We present a simple method for producing three-dimensional periodically ordered inorganic nanoheterostructures with controlled shape and size by replicating self-assembled block copolymers (BCPs) containing precursors of metals and metal oxides. Precursors were dissolved with BCPs in a solvent. Upon evaporation of the solvent, each precursor was selectively introduced into a separate polymer block. Application of an external magnetic field (10 T) to the BCP-precursor composites resulted in a phase transition of from spheres to hexagonal cylinders. Subsequent pyrolytic removal of the BCPs produced periodically ordered nanoheterostructures that were structural replicates of the precursor–BCP composites. Self-assembled nano-hetero inorganic structures of nanoparticles, nanorods and layers in a matrix were produced. The morphology and domain size can be tailored by controlling the molecular weight and relative block length of block copolymers. The controlled size and morphology of the inorganic nanoheterostructures demonstrate the method’s utility for producing highly functional materials.

scholarly journals Self-Assembly of Au-Fe3O4 Hybrid Nanoparticles Using a Sol–Gel Pechini Method

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6943
Author(s):  
Jesus G. Ovejero ◽  
Miguel A. Garcia ◽  
Pilar Herrasti
Keyword(s):  
Self Assembly ◽  
Pechini Method ◽  
Sol Gel ◽  
Reaction Times ◽  
Alkaline Media ◽  
Hybrid Nanoparticles ◽  
Self Assembling ◽  
Transmission Electron ◽  
Ir Transmission ◽  
Size And Morphology

The Pechini method has been used as a synthetic route for obtaining self-assembling magnetic and plasmonic nanoparticles in hybrid silica nanostructures. This manuscript evaluates the influence of shaking conditions, reaction time, and pH on the size and morphology of the nanostructures produced. The characterization of the nanomaterials was carried out by transmission electron microscopy (TEM) to evaluate the coating and size of the nanomaterials, Fourier-transform infrared spectroscopy (FT-IR) transmission spectra to evaluate the presence of the different coatings, and thermogravimetric analysis (TGA) curves to determine the amount of coating. The results obtained show that the best conditions to obtain core–satellite nanostructures with homogeneous silica shells and controlled sizes (<200 nm) include the use of slightly alkaline media, the ultrasound activation of silica condensation, and reaction times of around 2 hours. These findings represent an important framework to establish a new general approach for the click chemistry assembling of inorganic nanostructures.

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