Online citations, reference lists, and bibliographies.

Synthesis And Properties Of Amphiphilic Star Block Copolymers With Star Macroinitiators Based On A One-pot Approach

X. Jiang, L. Hu, Yongming Chen
Published 2013 · Materials Science

Cite This
Download PDF
Analyze on Scholarcy
Previously, star polystyrenes (PSs) have been prepared by atom transfer radical polymerization (ATRP) of N-[2-(2-bromoisobutyryloxy)ethyl]maleimide (BiBEMI) with a large excess of styrene (St) in one pot. But linear PSs were also present during the formation of the star polymers. In the work reported here, we found that control of the formation of star polymers using a one-pot approach can be improved by using a two-step process. The polymerization was conducted first at a low temperature to form multifunctional cores by copolymerization of BiBEMI and St. Second, on increasing the temperature, homopolymerization of St occurred to grow PS arms. Then a series of amphiphilic star polystyrene-block-poly(acrylic acid)s, (S14Ax)16, were prepared by ATRP of tert-butyl acrylate with the star PSs as macroinitiators, followed by selective acidolysis of the poly(tert-butyl acrylate) blocks. Their micellization was studied using dynamic light scattering, which suggested that (S14A112)16 amphiphilic star block copolymers could form unimolecular micelles in a basic aqueous solution. Then pyrene molecules were encapsulated using the (S14A112)16 amphiphilic star copolymers and the loading capacity was investigated with UV and fluorescence spectroscopy. © 2013 Society of Chemical Industry
This paper references
Preparation of Block copolymers of polystyrene and poly (t-butyl acrylate) of various molecular weights and architectures by atom transfer radical polymerization
K. A. Davis (2000)
Core-functionalized star polymers by transition metal-catalyzed living radical polymerization. 2. Selective interaction with protic guests via core functionalities
Kyung Youl Baek (2002)
Preparation and characterization of star ABC triblock copolymer of ethylene oxide,styrene and methyl methacrylate
Huang Junlian Huang Xiaoyu Hu Wenbing Lou Wenkui (1997)
Toward 'smart' nano-objects by self-assembly of block copolymers in solution
J. Rodríguez-Hernández (2005)
Star poly(2‐ethyl‐2‐oxazoline)s—synthesis and thermosensitivity
A. Kowalczuk (2011)
Core cross-linked star polymers via controlled radical polymerisation
A. Blencowe (2009)
Low-Polydispersity Star Polymers with Core Functionality by Cross-Linking Macromonomers Using Functional ATRP Initiators
Haifeng Gao (2007)
Synthesis and evaluation of a star amphiphilic block copolymer from poly(epsilon-caprolactone) and poly(ethylene glycol) as a potential drug delivery carrier.
F. Wang (2005)
A Novel Way To Synthesize Star Polymers in One Pot by ATRP of N-[2-(2-Bromoisobutyryloxy)ethyl]maleimide and Styrene
Guohua Deng and (2004)
Polyplex micelles prepared from ω-cholesteryl PEG-polycation block copolymers for systemic gene delivery.
Makoto Oba (2011)
Selectively Degradable Core Cross-Linked Star Polymers
James T. Wiltshire (2006)
Phenylboronic acid as a sugar- and pH-responsive trigger to tune the multiple micellization of thermo-responsive block copolymer
Qiao Jin (2010)
Synthesis and self-assembly of tunable thermosensitive chitosan amphiphilic copolymers by click chemistry
X. Li (2010)
One‐pot synthesis of photosensitive dendrimer‐like polystyrenes from simultaneous copper(I)‐catalyzed azide–alkyne cycloaddition and atom transfer radical polymerization
Fang Yao (2012)
Synthesis of 3-miktoarm stars and 1st generation mikto dendritic copolymers by "living" radical polymerization and "click" chemistry.
M. Whittaker (2006)
Multifunctional Polymeric Micelles for Enhanced Intracellular Delivery of Doxorubicin to Metastatic Cancer Cells
X. Xiong (2008)
Block copolymer micelles for drug delivery: design, characterization and biological significance.
K. Kataoka (2001)
Arborescent polystyrene-graft-poly(2-vinylpyridine) copolymers as unimolecular micelles : Solubilization studies
G. N. Njikang (2008)
Self-assembled polypeptide-block-poly(vinylpyrrolidone) as prospective drug-delivery systems.
L. Wang (2009)
Poly(ε-caprolactone)-Block-poly(ethyl Ethylene Phosphate) Micelles for Brain-Targeting Drug Delivery: In Vitro and In Vivo Valuation
Pengcheng Zhang (2010)
One-pot synthesis of star polymers by living radical polymerization
K. Ishizu (2003)
Branched poly(styrene-b-tert-butyl acrylate) and poly(styrene-b-acrylic acid) by ATRP from a dendritic poly(propylene imine)(NH2)64core
Y. H. Kim (2007)
Dynamic and static aspects of solubilization of neutral arenes in ionic micellar solutions
M. Almgren (1979)
Star polymers via cross-linking amphiphilic macroinitiators by AGET ATRP in aqueous media.
Wenwen Li (2009)
Core-shell type multiarm star poly(ε-caprolactone) with high molecular weight hyperbranched polyethylenimine as core: Synthesis, characterization and encapsulation properties
X. Cao (2008)
Micellization behavior of star-block copolymers in a selective solvent: A Brownian dynamics simulation approach.
J. Huh (2004)
Synthesis of Star Polymers by a Combination of ATRP and the “Click” Coupling Method
Haifeng Gao (2006)
A Versatile Approach to Unimolecular Water-Soluble Carriers: ATRP of PEGMA with Hydrophobic Star-Shaped Polymeric Core Molecules as an Alternative for PEGylation
Og Oana Schramm (2009)
One-pot synthesis of star polymer by ATRP of bismaleimide and an excess of styrene with a conventional initiator
G. Deng (2005)
Controlled synthesis of AB2 amphiphilic triarm star-shaped block copolymers by ring-opening polymerization
Svetlana Petrova (2009)
Design Criteria for Star Polymer Formation Processes via Living Free Radical Polymerization
Hugh Chaffey-Millar (2006)
Water‐soluble macromolecular co‐assemblies of star‐shaped polyelectrolytes
Dmitry V. Pergushov (2013)
The influence of solution‐state conditions and stirring rate on the assembly of poly(acrylic acid)‐containing amphiphilic triblock copolymers with multi‐amines
Jennifer L. Sorrells (2010)
Starlike Block Copolymers with Amphiphilic Arms as Models for Unimolecular Micelles
A. Heise (1999)
Local viscosity analysis of triblock copolymer micelle with cyanine dyes as a fluorescent probe.
Y. Shiraishi (2010)
Arm-first method as a simple and general method for synthesis of miktoarm star copolymers.
Haifeng Gao (2007)
Polymeric Micelles in Anticancer Therapy: Targeting, Imaging and Triggered Release
C. Oerlemans (2010)
Multiarm star‐like unimolecular micelles with a dendritic core and a dual thermosensitive shell
Shi-zhong Luo (2011)
Star polymers synthesised with flexible resorcinarene-derived ATRP initiators
S. Strandman (2007)
Encapsulation mechanism of molecular nanocarriers based on unimolecular micelle forming dendritic core-shell structural polymers.
J. Zou (2006)

This paper is referenced by
Semantic Scholar Logo Some data provided by SemanticScholar