Self-assembly of dendritic-linear block copolymers with fixed molecular weight and block ratio

2012 ◽  
Vol 48 (30) ◽  
pp. 3590 ◽  
Author(s):  
Moon Gon Jeong ◽  
Jan C. M. van Hest ◽  
Kyoung Taek Kim
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Self Assembly ◽  
Linear Block

Synthesis of Polystyrene-B-Poly(Ethylene Oxide)monomethyl Ethermethacrylate Block Copolymers and its Self-Assembly in Aqueous Solution

2011 ◽  
Vol 284-286 ◽  
pp. 769-772
Author(s):  
Qian Qian You ◽  
Pu Yu Zhang
Keyword(s):  
Aqueous Solution ◽  
Molecular Weight ◽  
Block Copolymers ◽  
Self Assembly ◽  
Chain Transfer ◽  
Functional Group ◽  
Transmission Electron ◽  
Reversible Addition ◽  
Ft Ir ◽  
A Chain

The block copolymer of PSt-b-POEOMA with the end of -COOH functional group has been synthesized by reversible addition fragmentation chain-transfer (RAFT) using S,S′-Bis(α,α′-dimethyl-α′′-acetic acid)-trithiocarbonate (BDATC) as a chain transfer agent. The architectures of the copolymers were confirmed by FT-IR and 1HNMR spectra. GPC analysis was used to estimate the molecular weight and the molecular weight distribution of the copolymers. Meanwhile, The nanostructures of the block copolymers PSt-b-POEOMA micelles formed in aqueous solution were observed by transmission electron microscopy (TEM) and dynamic light scattering (DLS).

Solvent-induced hierarchical self-assembly of amphiphilic PEG(Gm)-b-PS dendritic-linear block copolymers

Soft Matter ◽  
2013 ◽  
Vol 9 (47) ◽  
pp. 11398 ◽  
Author(s):  
Huanhuan Cai ◽  
Guoliang Jiang ◽  
Zhihao Shen ◽  
Xinghe Fan
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Linear Block

Star amphiphilic block copolymers: synthesis via polymerization-induced self-assembly and crosslinking within nanoparticles, and solution and interfacial properties

2020 ◽  
Vol 11 (14) ◽  
pp. 2532-2541 ◽  
Author(s):  
Sijia Qian ◽  
Rui Liu ◽  
Guang Han ◽  
Keyu Shi ◽  
Wangqing Zhang
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Self Assembly ◽  
Interfacial Properties ◽  
Amphiphilic Block Copolymers ◽  
Amphiphilic Block Copolymer ◽  
Linear Block

The star amphiphilic block copolymer of star s-PNIPAM-b-PS is synthesized and it shows characteristics significantly different from those of the linear block copolymer counterpart.

Self-Assembly of Inorganic Nanoparticle Vesicles and Tubules Driven by Tethered Linear Block Copolymers

2012 ◽  
Vol 134 (28) ◽  
pp. 11342-11345 ◽  
Author(s):  
Jie He ◽  
Yijing Liu ◽  
Taarika Babu ◽  
Zengjiang Wei ◽  
Zhihong Nie
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Inorganic Nanoparticle ◽  
Linear Block

Nanoimprint-assisted directed self-assembly of low-molecular weight block copolymers: a route for 3D and multilevel nanostructures

2014 ◽  
Author(s):  
C Simão ◽  
W. Khunsin ◽  
N. Kehagias ◽  
A. Francone ◽  
M. Zelsmann ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Self Assembly ◽  
Low Molecular Weight

Self-assembly of linear block copolymers. Relative stability of hyperbolic phases

1993 ◽  
Vol 26 (25) ◽  
pp. 6782-6788 ◽  
Author(s):  
S. T. Hyde ◽  
A. Fogden ◽  
B. W. Ninham
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Relative Stability ◽  
Linear Block

Poly(Ethylene Oxide)-B-Poly(ε-Caprolactone) Amphiphilic Block Copolymers: Synthesis and Self-Assembly

2011 ◽  
Vol 284-286 ◽  
pp. 1877-1885
Author(s):  
Ke Xin Kang ◽  
Min Ying Liu ◽  
Qing Xiang Zhao ◽  
Peng Fu ◽  
Xiao Bing Wang
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Self Assembly ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Amphiphilic Block Copolymers ◽  
H Nmr ◽  
Transmission Electron ◽  
Particle Size Analyzer ◽  
Anionic Ring

A series of amphiphilic block copolymers mPEO-b-PCL with different PCL molecular weight were successfully prepared by combination of anionic ring-opening polymerization with coordination-insertion ring-opening polymerization. Firstly, the linear mPEO was prepared by anionic ring-opening copolymerization of EO with 2-(2-methoxyethoxy) ethoxide potassium as the small molecule initiators, then the mPEO as the macroinitiator was used to initiate the ring-opening polymerization of CL, in the absence of Sn(Oct)2 as the catalyst, and amphiphilic block copolymers mPEO-b-PCL were obtained. By changing the ratio of monomer and macroinitiator, prepared a series of different molecular weight mPEO-b-PCL. The structure of intermediates and final products were characterized by 1H NMR and GPC. The critical micelle concentration (cmc) of the final copolymer was measured. In addition, the sizes and morphologies of the obtained micelles at different PCL chains were studied with Laser nano-particle size analyzer and transmission electron microscopy (TEM).

Cationic Amphiphilic Star and Linear Block Copolymers: Synthesis, Self-Assembly, and in Vitro Gene Transfection

2011 ◽  
Vol 12 (9) ◽  
pp. 3213-3222 ◽  
Author(s):  
Anu M. Alhoranta ◽  
Julia K. Lehtinen ◽  
Arto O. Urtti ◽  
Sarah J. Butcher ◽  
Vladimir O. Aseyev ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Gene Transfection ◽  
Linear Block

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.

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