Cyclic azobenzene-containing amphiphilic diblock copolymers: solution self-assembly and unusual photo-responsive behaviors

2015 ◽  
Vol 6 (16) ◽  
pp. 3009-3013 ◽  
Author(s):  
Beibei Chen ◽  
Zhao Wang ◽  
Jinjie Lu ◽  
Xian Yang ◽  
Yong Wang ◽  
...  
Keyword(s):  
Diblock Copolymer ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Amphiphilic Diblock Copolymer ◽  
Spherical Micelles ◽  
Self Assembled ◽  
Amphiphilic Diblock Copolymers

A novel amphiphilic diblock copolymer containing cyclic-azobenzene has been synthesized and self-assembled into spherical micelles which show unusual photo-responsive behaviors.

MONTE CARLO SIMULATION OF SELF-ASSEMBLED AMPHIPHILIC DIBLOCK COPOLYMER IN SOLUTION

2003 ◽  
Vol 17 (01n02) ◽  
pp. 241-244 ◽  
Author(s):  
PINGCHUAN SUN ◽  
YUHUA YIN ◽  
BAOHUI LI ◽  
QINGHUA JIN ◽  
DATONG DING
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Diblock Copolymer ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
The Self ◽  
Amphiphilic Diblock Copolymer ◽  
The Core ◽  
Spherical Micelles ◽  
The Given

In this paper, Monte Carlo method is applied to simulate the process of the self-assembly of amphiphilic diblock copolymer with a series of block lengths of the insoluble and soluble blocks. Under the given simulation conditions, the diblock copolymers form spherical micelles in solution. The dependence of the core radii of spherical micelles on both block lengths is obtained and compared with experimental results of Eisenberg and coworkers.

Self-Assemble Behavior of Amphiphilic Diblock Copolymer of Methoxy Poly (Ethylene Glycol)/Polyester

2011 ◽  
Vol 295-297 ◽  
pp. 11-15
Author(s):  
Hao Zhou ◽  
Qing Hong Liang ◽  
Xiang Ke Shi ◽  
Li Hua Lu ◽  
Li Qun Zhang ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Light Scattering ◽  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Average Diameter ◽  
Core Shell ◽  
Amphiphilic Diblock Copolymer ◽  
Amphiphilic Diblock Copolymers ◽  
Methoxy Polyethylene Glycol ◽  
Solution Polycondensation

Amphiphilic diblock copolymers based on methoxy polyethylene glycol (MePEG), 1, 6-hexanediol and maleic anhydride with different molar composition were synthesized by solution polycondensation. Self-assemble behavior of amphiphilic diblock copolymer in different solvents by dialyzing technique was discussed. The micelle morphologhy was observed by TEM. It was found that well core-shell MePEG1900/Polyester 2162 copolymer nanoparticles can be formed by self-assemble in acetone solution. In addition, the size of nanospheres measured using dynamic light scattering exhibited a narrow monodisphere size distribution and an average diameter in the ranger of less than 200nm.

scholarly journals Synthesis of amphiphilic diblock copolymers of isotactic polystyrene-block-isotactic poly(p-hydroxystyrene) using a titanium complex with an [OSSO]-type bis(phenolate) ligand and sequential monomer addition

RSC Advances ◽  
2017 ◽  
Vol 7 (32) ◽  
pp. 19885-19893 ◽  
Author(s):  
QiHua Zhou ◽  
HuaQing Liang ◽  
WanChu Wei ◽  
ChunFeng Meng ◽  
YongJiang Long ◽  
...  
Keyword(s):  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Amphiphilic Diblock Copolymer ◽  
Isotactic Polystyrene ◽  
Titanium Complex ◽  
Sequential Monomer Addition ◽  
Amphiphilic Diblock Copolymers ◽  
Hydrolysis Of

A novel amphiphilic diblock copolymer of iPS-b-iP(p-HOS) is prepared resulting from the hydrolysis of iPS-b-iP(p-TBDMSOS) synthesized by sequential monomer addition with [OSSO]-type titanium complex 1/MAO.

Thermo-responsive metallo-supramolecular gels based on terpyridine end-functionalized amphiphilic diblock copolymers

2013 ◽  
Vol 1499 ◽  
Author(s):  
Jérémy Brassinne ◽  
Charles-André Fustin ◽  
Jean-François Gohy
Keyword(s):  
Mechanical Properties ◽  
Diblock Copolymer ◽  
Self Assembly ◽  
Micellar Solution ◽  
Diblock Copolymers ◽  
Solution Temperature ◽  
Selective Solvent ◽  
Critical Solution Temperature ◽  
Terpyridine Ligands ◽  
Amphiphilic Diblock Copolymers

ABSTRACTA thermo-responsive hydrogel was prepared on the basis of terpyridine endfunctionalized polystyrene-block-poly(N-isopropylacrylamide) diblock copolymer. As a first level of assembly, the copolymer was dissolved in a selective solvent to yield micelles bearing terpyridine ligands at the extremity of the coronal chains. The second level of self-assembly was triggered upon addition of metal ions to the micellar solution. Mechanical properties of the accordingly obtained micellar gel were finally characterized by rotational rheometry, below and above the lower critical solution temperature.

Multicompartment micelles based on hierarchical co-assembly of PCL-b-PEG and PCL-b-P4VP diblock copolymers

RSC Advances ◽  
2016 ◽  
Vol 6 (7) ◽  
pp. 5312-5319 ◽  
Author(s):  
Xue Liu ◽  
Yu Hou ◽  
Xiuping Tang ◽  
Qiuhua Wu ◽  
Chenglin Wu ◽  
...  
Keyword(s):  
Diblock Copolymer ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Amphiphilic Diblock Copolymer ◽  
Multicompartment Micelles

Multicompartment micelles with various morphologies were preparedviadirected stepwise self-assembly using pre-assembled subunits, which were first constructed through the co-assembly of two amphiphilic diblock copolymer: PCL-b-PEG and PCL-b-P4VP.

Self-assembly of hydrophobic-amphiphilic diblock copolymers in solution

2021 ◽  
Author(s):  
Sophia Pavlenko ◽  
Daniil E Larin ◽  
Elena Nikolaevna Govorun
Keyword(s):  
Diblock Copolymer ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Mean Field ◽  
Chain Structure ◽  
Spherical Particles ◽  
Condensed State ◽  
Thermoresponsive Polymers ◽  
Polar Groups ◽  
Amphiphilic Diblock Copolymers

Abstract Thermoresponsive polymers are usually characterized by a locally amphiphilic chain structure and their self-assembly in solution is controlled, in particular, by the surface activity of the monomer units or side chains. We theoretically study the condensed state of a single diblock copolymer molecule consisting of a hydrophobic block and amphiphilic block with hydrophobic groups in the backbone and pendant polar groups. The equilibrium parameters of the polymer globules of different shapes are determined using the mean-field approach to determine the most favorable structure. Morphological diagrams of condensed macromolecules are presented depending on the chain length, amphiphilic block fraction, interaction parameters, and pendant volume and length. The diagrams are compared with those of a copolymer molecule with the same fraction of amphiphilic monomer units which are regularly distributed along the chain. The diblock copolymer molecule is found to form a single spherical or flattened particle, with the core from the hydrophobic block, or a granular micelle consisting of spherical or nearly spherical particles, in agreement with the experimental data in the literature. The optimal chain parameters for self-assembly into a stable single core-shell particle are predicted.

scholarly journals Synthesis and complex self-assembly of amphiphilic block copolymers with a branched hydrophobic poly(2-oxazoline) into multicompartment micelles, pseudo-vesicles and yolk/shell nanoparticles

2020 ◽  
Vol 11 (6) ◽  
pp. 1237-1248 ◽  
Author(s):  
Davy Daubian ◽  
Jens Gaitzsch ◽  
Wolfgang Meier
Keyword(s):  
Block Copolymers ◽  
Diblock Copolymer ◽  
Self Assembly ◽  
Amphiphilic Block Copolymers ◽  
Side Chain ◽  
Shell Nanoparticles ◽  
Amphiphilic Diblock Copolymer ◽  
Self Assembled ◽  
Multicompartment Micelles

A new PEO-b-PEHOx amphiphilic diblock copolymer was achieved which unlocked new complex self-assembled structures. Thanks to its hydrophobic oxazoline block with a long branched side chain, EHOx, various potent structures were obtained.

Synthesis of poly(methyl methacrylate)-b-poly(acrylic acid) by DPE method

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Dong Chen ◽  
Ruixue Liu ◽  
Zhifeng Fu ◽  
Yan Shi
Keyword(s):  
Molecular Weight ◽  
Acrylic Acid ◽  
Methyl Methacrylate ◽  
Diblock Copolymer ◽  
Self Assembly ◽  
Gel Permeation Chromatography ◽  
Amphiphilic Diblock Copolymer ◽  
Poly Methyl Methacrylate ◽  
Copolymer Poly ◽  
Poly Acrylic Acid

AbstractAmphiphilic diblock copolymer poly(methyl methacrylate)-b-poly(acrylic acid) (PMMA-b-PAA) was prepared by 1,1-diphenylethene (DPE) method. Firstly, free radical polymerization of methyl methacrylate was carried out with AIBN as initiator in the presence of DPE, giving a DPE-containing PMMA precursor with controlled molecular weight. tert-Butyl acrylate (tBA) was then polymerized in the presence of the PMMA precursor, and PMMA-b-PtBA diblock copolymer with controlled molecular weight was prepared. Finally, amphiphilic diblock copolymer PMMA-b-PAA was obtained by hydrolysis of PMMA-b-PtBA. The formation of PMMA-b-PAA was confirmed by 1H NMR spectrum and gel permeation chromatography. Transmission electron microscopy and dynamic light scattering were used to detect the self-assembly behavior of the amphiphilic diblock polymers in methanol.

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