Effect of block length, polydispersity, and salt concentration on PEO-PDEAMA block copolymer structures in dilute solution

Langmuir : the ACS Journal of Surfaces and Colloids
Dave J AdamsAnthony C Weaver

Abstract

A series of poly(ethylene oxide)-block-poly(N,N-diethylaminoethyl methacrylate) (PEO-PDEAMA) block copolymers with relatively high polydispersity (1.36 < PDI < 1.96) have been prepared to determine the effect that polydispersity has on the self-assembly of amphiphilic block copolymers in dilute solution. Because monodisperse macroinitiators were used for the ATRP reactions, the polydispersity resides within the hydrophobic block. By adjusting the relative block lengths, spherical micelles, wormlike micelles, vesicles, or a precipitate is formed. Here, we show that relatively high polydispersity in the block copolymer does not preclude efficient self-assembly. We also discuss the effect of increasing the concentration of NaCl in the systems and show that this can result in a shift from one morphology to another. These shifts are reversible in some cases, but for PEO12-PDEAMA39, this method allows access to giant vesicles of between 500 nm and 1 microm in diameter.

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Citations

Mar 5, 2013·ACS Applied Materials & Interfaces·Jichun YouYongjin Li
Sep 3, 2009·Journal of the American Chemical Society·Shaoyong YuAdi Eisenberg
Feb 9, 2011·Chemical Communications : Chem Comm·Jens GaitzschBrigitte Voit
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Apr 26, 2008·Journal of Controlled Release : Official Journal of the Controlled Release Society·Dave J AdamsSteve Furzeland
Apr 9, 2008·Journal of Colloid and Interface Science·Dave J AdamsPeter Schuetz
Feb 18, 2009·Macromolecular Rapid Communications·Adam BlanazsAnthony J Ryan
Aug 22, 2012·Chemistry : a European Journal·Mohamed A YassinBrigitte Voit
May 14, 2011·Macromolecular Rapid Communications·Christophe Schatz, Sébastien Lecommandoux
Nov 28, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Sonu KumarPriyadarsi De
Jul 30, 2014·Biomacromolecules·Anja CarWolfgang Meier
Dec 23, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Jinchao ZhangZhiyuan Zhong
Dec 16, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·P ChambonS P Armes
Feb 28, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Puxiu WangXing Tang
Aug 19, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Nadia TzokovaDave J Adams
Aug 19, 2008·The Journal of Physical Chemistry. B·Jingyan ZhangShiyong Liu
Nov 9, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Dave J AdamsMichael F Butler
Sep 20, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Xianghong Peng, Lina Zhang
Jan 11, 2019·The Journal of Physical Chemistry. B·Xi JiangNitash P Balsara
May 3, 2007·The Journal of Physical Chemistry. B·Junfeng ZhouZhenrong Zhao

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