Self-assembly of double hydrophilic block copolymers in concentrated aqueous solution

Soft Matter ◽  
2011 ◽  
Vol 7 (14) ◽  
pp. 6399 ◽  
Author(s):  
Adam Blanazs ◽  
Nicholas J. Warren ◽  
Andrew L. Lewis ◽  
Steven P. Armes ◽  
Anthony J. Ryan
Keyword(s):  
Aqueous Solution ◽  
Block Copolymers ◽  
Self Assembly ◽  
Double Hydrophilic Block Copolymers

scholarly journals Tannic Acid-Mediated Aggregate Stabilization of Poly(N-vinylpyrrolidone)-b-poly(oligo (ethylene glycol) methyl ether methacrylate) Double Hydrophilic Block Copolymers

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 662 ◽  
Author(s):  
Al Nakeeb ◽  
Nischang ◽  
Schmidt
Keyword(s):  
Aqueous Solution ◽  
Block Copolymers ◽  
Ethylene Glycol ◽  
Tannic Acid ◽  
Self Assembly ◽  
The Self ◽  
Covalent Crosslinking ◽  
Double Hydrophilic Block Copolymers ◽  
Concentration Dependency ◽  
Glycol Methyl Ether

The self-assembly of block copolymers in aqueous solution is an important field in modern polymer science that has been extended to double hydrophilic block copolymers (DHBC) in recent years. In here, a significant improvement of the self-assembly process of DHBC in aqueous solution by utilizing a linear-brush macromolecular architecture is presented. The improved self-assembly behavior of poly(N-vinylpyrrolidone)-b-poly(oligo(ethylene glycol) methyl ether methacrylate) (PVP-b-P(OEGMA)) and its concentration dependency is investigated via dynamic light scattering (DLS) (apparent hydrodynamic radii ≈ 100–120 nm). Moreover, the DHBC assemblies can be non-covalently crosslinked with tannic acid via hydrogen bonding, which leads to the formation of small aggregates as well (apparent hydrodynamic radius ≈ 15 nm). Non-covalent crosslinking improves the self-assembly and stabilizes the aggregates upon dilution, reducing the concentration dependency of aggregate self-assembly. Additionally, the non-covalent aggregates can be disassembled in basic media. The presence of aggregates was studied via cryogenic scanning electron microscopy (cryo-SEM) and DLS before and after non-covalent crosslinking. Furthermore, analytical ultracentrifugation of the formed aggregate structures was performed, clearly showing the existence of polymer assemblies, particularly after non-covalent crosslinking. In summary, we report on the completely hydrophilic self-assembled structures in solution formed from fully biocompatible building entities in water.

Small molecule-mediated self-assembly behaviors of Pluronic block copolymers in aqueous solution: impact of hydrogen bonding on the morphological transition of Pluronic micelles

Soft Matter ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 142-151 ◽  
Author(s):  
Haiyan Luo ◽  
Kun Jiang ◽  
Xiangfeng Liang ◽  
Huizhou Liu ◽  
Yingbo Li
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Bonding ◽  
Block Copolymers ◽  
Small Molecules ◽  
Small Molecule ◽  
Propyl Gallate ◽  
Self Assembly ◽  
Morphological Transition ◽  
Propyl Paraben ◽  
Pluronic P123

The influence of hydrogen bonding on the morphological transition of Pluronic P123 micelles is experimentally and theoretically investigated by introducing three small molecules, i.e. propyl benzoate (PB), propyl paraben (PP) and propyl gallate (PG).

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).

scholarly journals Thermoinduced Crystallization-Driven Self-Assembly of Bioinspired Block Copolymers in Aqueous Solution

2020 ◽  
Vol 21 (8) ◽  
pp. 3411-3419 ◽  
Author(s):  
Zhiwei Wang ◽  
Min Lin ◽  
Colin Bonduelle ◽  
Rongye Li ◽  
Zhekun Shi ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Block Copolymers ◽  
Self Assembly
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