scholarly journals Synthesis and Self-assembly Behavior of Photo-responsive Diblock Copolymers with Different Hydrophilic/Hydrophobic Ratios

2014 ◽  
Vol 72 (5) ◽  
pp. 602 ◽  
Author(s):  
Yanchun Ding ◽  
Yanlei Yu ◽  
Jia Wei
Keyword(s):  
Self Assembly ◽  
Diblock Copolymers ◽  
Assembly Behavior

Synthesis of poly[(decanoic acid)-block-styrene] diblock copolymers and their self-assembly behavior in aqueous medium

2008 ◽  
Vol 57 (4) ◽  
pp. 571-576 ◽  
Author(s):  
Dongshuang Li ◽  
Ke Sha ◽  
Yapeng Li ◽  
Peng Ai ◽  
Xiaotian Liu ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Decanoic Acid ◽  
Assembly Behavior

Effect of macromolecular architecture on the self-assembly behavior of copolymers in a selective polymer host

Soft Matter ◽  
2018 ◽  
Vol 14 (47) ◽  
pp. 9562-9570 ◽  
Author(s):  
Petra Bačová ◽  
Romanos Foskinis ◽  
Emmanouil Glynos ◽  
Anastassia N. Rissanou ◽  
Spiros H. Anastasiadis ◽  
...  
Keyword(s):  
Simulation Study ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Dynamical Behavior ◽  
The Self ◽  
Detailed Simulation ◽  
Assembly Behavior ◽  
Macromolecular Architecture ◽  
Polymer Host

We present a detailed simulation study of the structural and dynamical behavior of amphiphilic mikto-arm stars versus that of linear diblock copolymers in a selective homopolymer host.

Synthesis and Self-Assembly Behavior of Chiral Amphiphilic Diblock Copolymers Bearing L-Phenylalanine

2011 ◽  
Vol 345 ◽  
pp. 334-337
Author(s):  
Yong Zhou ◽  
Bing Liu
Keyword(s):  
Amino Acid ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Dihydrogen Phosphate ◽  
Sodium Dihydrogen Phosphate ◽  
Poly Ethylene Oxide ◽  
Amphiphilic Diblock Copolymers ◽  
Assembly Behavior ◽  
Poly Ethylene ◽  
Sodium Dihydrogen

Novel chiral amphiphilic diblock copolymers bearing L-phenylalanine was synthesized using a “click” reaction of N3-L-phenylalanine and MPEO-b-PGPE. The structure and composition of copolymers were characterized by 1H-NMR and elemental analysis. Additionally, the self-assembly behavior of these chiral copolymers was investigated in sodium dihydrogen phosphate buffer (pH 4.5): the CMC of copolymer MPEO-b-PGTP determined by the measurement of surface tension was 2.1 mg/mL; the size and morphology of the micelles were studied using TEM; the specific optical rotation ([α]25D) of the micellar solutions was also measured; the result indicated that the copolymers can form chiral micelles in sodium dihydrogen phosphate buffer (pH =4.5).In recent years, the synthesis, structure and properties of optically active polymer have been paid attention by scientists owing to its potential applications in chiral separation, asymmetric adsorption, chiral synthesis[1]. The amphiphilic block polymers bearing amino acid possess not only the characteristics of the conventional amphiphilic block copolymer, but also good optically activity and biocompatibility. So it can be employed as nanoreactors for asymmetrical catalysis and materials for drug delivery. But there have been few reports published on the synthesis of chiral amphiphilic copolymers bearing amino acid. Sutthira Sutthasupa reported the synthesis of amino acid-based norbornene block copolymer with ester and carboxyl groups as hydrophobic and hydrophilic units[2]. O’Reilly group synthesized the amino acid-based chiral amphiphilic block copolymers using RAFT technique, and elucidated its self-assembly into spherical micelles with optically active hydrophobic core[3]. In the present work, chiral amphiphilic diblock copolymers bearing L-phenylalanine (L-Phe) pendants poly(ethylene oxide)-b-poly (glycidyl triazolyl-L-phenylalanine) (MPEO-b-PGTP) have been synthesized by the modification of poly(ethylene oxide)-b-poly (propargyl glycidyl ether) (MPEO-b-PGPE) with L-phenylalanine.

scholarly journals Synthesis of P4VP-b-PBLG Diblock Copolymers and Their Self-Assembly Behavior

2019 ◽  
Vol 07 (03) ◽  
pp. 56-64
Author(s):  
Xinshu Huang ◽  
Zhen Liu ◽  
Xiaohua He
Keyword(s):  
Self Assembly ◽  
Diblock Copolymers ◽  
Assembly Behavior

Morphology Transition of Diblock Copolymer with Nanoparticles Confined in Cylindrical Nanopores

2013 ◽  
Vol 275-277 ◽  
pp. 1781-1784 ◽  
Author(s):  
Ying Yu ◽  
Yu Xin Zuo ◽  
Zhao Zhang ◽  
Chun Cheng Zuo
Keyword(s):  
Phase Diagram ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Coarse Grained ◽  
Morphology Transition ◽  
Polymer Interactions ◽  
Simulation Results ◽  
Assembly Behavior ◽  
Dynamics Simulations ◽  
Polymer Interaction

Coarse-grained molecular dynamics simulations on self-assembly behavior of diblock copolymers (DCP) with nanoparticles confined in cylindrical nanopores are perfomed to study the morphology transition of DCP affected by the confined ratio of the cylindrical confinement diameter to the block copolymer domain spacing, the wall-polymer interactions, the particle-polymer interaction potential and the component concentration. The simulation results show that nanoparticles have a pronounced effect on the morphology transition of DCP and can therefore be considered as an important aspect in controlling the confined self-assembly in cylindrical confinement. Besides, the phase diagram indicates the process of morphology transition.

Synthesis, characterization and self-assembly behavior in water as fluorescent sensors of cationic water-soluble conjugated polyfluorene-b-poly(N-isopropylacrylamide) diblock copolymers

Polymer ◽  
2009 ◽  
Vol 50 (5) ◽  
pp. 1236-1245 ◽  
Author(s):  
Weizhi Wang ◽  
Rui Wang ◽  
Chao Zhang ◽  
Su Lu ◽  
Tianxi Liu
Keyword(s):  
Self Assembly ◽  
Diblock Copolymers ◽  
Fluorescent Sensors ◽  
Water Soluble ◽  
Assembly Behavior

Novel Fluoroalkyl End-Capped Amphiphilic Diblock Copolymers with pH/Temperature Response and Self-Assembly Behavior

Langmuir ◽  
2008 ◽  
Vol 24 (9) ◽  
pp. 4647-4654 ◽  
Author(s):  
Hu Zhang ◽  
Peihong Ni ◽  
Jinlin He ◽  
Cuicui Liu
Keyword(s):  
Self Assembly ◽  
Diblock Copolymers ◽  
Temperature Response ◽  
Amphiphilic Diblock Copolymers ◽  
Assembly Behavior

scholarly journals Effects of Hydrophobic Modifications on the Solution Self-Assembly of P(DMAEMA-co-QDMAEMA)-b-POEGMA Random Diblock Copolymers

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 338
Author(s):  
Martha Kafetzi ◽  
Stergios Pispas
Keyword(s):  
Aqueous Solution ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Raft Polymerization ◽  
Temperature Response ◽  
High Mass ◽  
Alkyl Chains ◽  
Release Studies ◽  
Solution Preparation ◽  
Assembly Behavior

In this work, the synthesis and the aqueous solution self-assembly behavior of novel partially hydrophobically modified poly(2-(dimethylamino) ethyl methacrylate)-b-poly(oligo(ethylelene glycol) methyl ether methacrylatetabel) pH and temperature responsive random diblock copolymers (P(DMAEMA-co-Q6/12DMAEMA)-b-POEGMA), are reported. The chemical modifications were accomplished via quaternization with 1-iodohexane (Q6) and 1-iodododecane (Q12) and confirmed by 1H-NMR spectroscopy. The successful synthesis of PDMAEMA-b-POEGMA precursor block copolymers was conducted by RAFT polymerization. The partial chemical modification of the diblocks resulted in the permanent attachment of long alkyl chains on the amine groups of the PDMAEMA block and the presence of tertiary and quaternary amines randomly distributed within the PDMAEMA block. Light scattering techniques confirmed that the increased hydrophobic character results in the formation of nanoaggregates of high mass and tunable pH and temperature response. The characteristics of the aggregates are also affected by the aqueous solution preparation protocol, the nature of the quaternizing agent and the quaternization degree. The incorporation of long alkyl chains allowed the encapsulation of indomethacin within the amphiphilic diblock copolymer aggregates. Nanostructures of increased size were detected due to the encapsulation of indomethacin into the interior of the hydrophobic domains. Drug release studies demonstrated that almost 50% of the encapsulated drug can be released on demand by aid of ultrasonication.

Brownian Molecular Dynamics Simulation on Self-Assembly Behavior of Rod−Coil Diblock Copolymers

2007 ◽  
Vol 40 (5) ◽  
pp. 1684-1692 ◽  
Author(s):  
Shaoliang Lin ◽  
Naoko Numasawa ◽  
Takuhei Nose ◽  
Jiaping Lin
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Dynamics Simulation ◽  
Assembly Behavior
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