Self-assembly of block copolymers into sieve-like particles with arrayed switchable channels and as scaffolds to guide the arrangement of gold nanoparticles

Nanoscale ◽  
2017 ◽  
Vol 9 (39) ◽  
pp. 15056-15061 ◽  
Author(s):  
Yun He ◽  
Yan Zhang ◽  
Nan Yan ◽  
Yutian Zhu ◽  
Wei Jiang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Block Copolymers ◽  
Self Assembly ◽  
Triblock Copolymers ◽  
Emulsion Droplets

The unique sieve-like particles with lattice arrayed switchable channels were created via the confined self-assembly of P4VP-b-PS-b-P4VP triblock copolymers within the emulsion droplets.

Self-Assembly of Hydrogels From Elastin-Mimetic Block Copolymers

2002 ◽  
Vol 724 ◽  
Author(s):  
Elizabeth R. Wright ◽  
R. Andrew McMillan ◽  
Alan Cooper ◽  
Robert P. Apkarian ◽  
Vincent P. Conticello
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Triblock Copolymers ◽  
Variable Temperature ◽  
Inverse Temperature ◽  
Temperature Transition ◽  
Scanning Calorimetry ◽  
Design Synthesis ◽  
Inverse Temperature Transition ◽  
Functional Biomaterials

AbstractTriblock copolymers have traditionally been synthesized with conventional organic components. However, triblock copolymers could be synthesized by the incorporation of two incompatible protein-based polymers. The polypeptides would differ in their hydrophobicity and confer unique physiochemical properties to the resultant materials. One protein-based polymer, based on a sequence of native elastin, that has been utilized in the synthesis of biomaterials is poly (Valine-Proline-Glycine-ValineGlycine) or poly(VPGVG) [1]. This polypeptide has been shown to have an inverse temperature transition that can be adjusted by non-conservative amino acid substitutions in the fourth position [2]. By combining polypeptide blocks with different inverse temperature transition values due to hydrophobicity differences, we expect to produce amphiphilic polypeptides capable of self-assembly into hydrogels. Our research examines the design, synthesis and characterization of elastin-mimetic block copolymers as functional biomaterials. The methods that are used for the characterization include variable temperature 1D and 2D High-Resolution-NMR, cryo-High Resolutions Scanning Electron Microscopy and Differential Scanning Calorimetry.

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).

Effect of block copolymer architecture and composition on gold nanoparticle fabrication

2019 ◽  
Vol 10 (34) ◽  
pp. 4637-4642 ◽  
Author(s):  
Anna P. Constantinou ◽  
Uriel Marie-Sainte ◽  
Lihui Peng ◽  
Dean R. Carroll ◽  
Catriona M. McGilvery ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Gold Nanoparticle ◽  
Self Assembly ◽  
The Self ◽  
Nanoparticle Fabrication

Gold nanoparticles (AuNPs) fabricated via the self-assembly of block copolymers of various architectures.

Thermally Tunable Metallodielectric Photonic Crystals from the Self-Assembly of Brush Block Copolymers and Gold Nanoparticles

2015 ◽  
Vol 3 (9) ◽  
pp. 1169-1175 ◽  
Author(s):  
Dong-Po Song ◽  
Cheng Li ◽  
Nicholas S. Colella ◽  
Xuemin Lu ◽  
Jae-Hwang Lee ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Block Copolymers ◽  
Photonic Crystals ◽  
Self Assembly ◽  
The Self

Self-Assembly of ABC-Type Amphiphilic Fluorinated Triblock Copolymers in Different Mixed Solutions

2010 ◽  
Vol 663-665 ◽  
pp. 880-882
Author(s):  
Xin De Tang ◽  
Jing Xu
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Triblock Copolymer ◽  
Triblock Copolymers ◽  
Ionic Concentration ◽  
The Self ◽  
Amphiphilic Block Copolymers ◽  
Mixed Solutions

The behavior of amphiphilic block copolymers in solution has attracted considerable attention in recent years. In this paper, the self-assembly behaviors of the amphiphilic fluorinated ABC-type triblock copolymer (MeOPEO16-PSt220-PFHEA22) in different mixed solutions were studied. Also, the effect of ionic concentration on the self-assembly aggregates of the copolymer in toluene-ethanol-water was studied.

Temperature and anion responsive self-assembly of ionic liquid block copolymers coating gold nanoparticles

2016 ◽  
Vol 10 (2) ◽  
pp. 178-186 ◽  
Author(s):  
Junbo Li ◽  
Jianlong Zhao ◽  
Wenlan Wu ◽  
Ju Liang ◽  
Jinwu Guo ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Ionic Liquid ◽  
Block Copolymers ◽  
Self Assembly

Synthesis and self-assembly of CO2-responsive dendronized triblock copolymers

2015 ◽  
Vol 6 (42) ◽  
pp. 7427-7435 ◽  
Author(s):  
Meng Huo ◽  
Qiquan Ye ◽  
Hailong Che ◽  
Mengzhen Sun ◽  
Jinying Yuan ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Triblock Copolymers ◽  
Amphiphilic Block Copolymers ◽  
Assembly Behavior

Dendronized amphiphilic block copolymers POEGMA-b-P(Gn)-b-PDEAEMA were synthesized, and their self-assembly behavior could be regulated by the dendron generation, the type of common solvent, and CO2-stimulus.

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