Adsorption characteristics of zwitterionic diblock copolymers at the silica/aqueous solution interface

Sakai, Kenichi; Vamvakaki, Maria; Smith, Emelyn G.; Wanless, Erica J.; Armes, Steven P.; Biggs, Simon

doi:10.1016/j.jcis.2007.09.072

Cited by 17 publications

(16 citation statements)

References 47 publications

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“…In a series of articles, Biggs and co-workers have investigated the deposition of various responsive copolymer aggregates at the solid-liquid interface. 25,[121][122][123]163,233,[239][240][241][242][243] From aqueous solution, the adsorption of these aggregates is primarily driven either by electrostatic attraction between charged aggregates and an oppositely charged surface or by hydrogen bonding interactions. Regardless of the adsorption mechanism, it has been shown that high-density coatings of surfaces by the copolymer aggregates are possible.…”

Section: Application-driven Examples Of Responsive Nanoparticlesmentioning

confidence: 99%

Stimulus responsive core-shell nanoparticles: synthesis and applications of polymer based aqueous systems

Chagneux²,

2011

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In this article we review the current state of knowledge in the field of responsive nanoparticles for aqueous-based systems. The review focuses on the use of stimuli-responsive copolymers that can either self-assemble into 'soft' nanoparticles or that are attached to the surface of solid nanoparticles. We first describe the most common methods for synthesizing the different responsive polymers used in the design of such nanoparticles, highlighting living radical polymerization techniques in particular. Subsequently, we give examples of how copolymers containing such responsive blocks can selfassemble into a wide range of 'soft' structures. We also depict the main techniques for attaching responsive polymers to the surface of solid nanoparticles and list advantages and drawbacks of each. Finally, for both soft self-assembled systems and solid core-polymer shell systems, we show specific examples of these systems used in a varied range of applications including drug delivery, smart emulsifiers, transport across membranes, sensors and coatings.

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Section: Application-driven Examples Of Responsive Nanoparticlesmentioning

confidence: 99%

Stimulus responsive core-shell nanoparticles: synthesis and applications of polymer based aqueous systems

Chagneux²,

2011

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“…The adsorption behaviour of block copolymers at solid–liquid interfaces is a new and interesting research topic because it is relevant to many technological and biological applications . The adsorption behaviour of linear polymers like homopolymers and diblock and triblock copolymers has been investigated in depth because of their relatively simple chain structures .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, aggregation and adsorption behaviour of a thermoresponsive pentablock copolymer

Parekh

Ohno

Yusa

et al. 2020

Polymer International

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Poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) triblock copolymer (Pluronic F127) was modified by introducing poly(N-isopropylacrylamide) (PNIPAM) at both the PEO ends, and the pentablock copolymer (PNIPAM 41-F127-PNIPAM 41 , PN41) so prepared was characterized using gel permeation chromatography and 1 H NMR spectroscopy. The degree of polymerization of NIPAM blocks at the two ends was 41. The solution behaviour and microstructure of PN41 aggregates in water were examined using UV-visible spectroscopy, micro-differential scanning calorimetry and small-angle neutron scattering (SANS) and compared with F127. Two lower critical solution temperatures (LCSTs) were observed for the pentablock copolymer, corresponding to PPO and PNIPAM blocks, respectively. The adsorption of PN41 on thiol-grafted hydrophobic gold surfaces at various temperatures was investigated using a quartz crystal microbalance. It was found that the adsorption behaviour and mechanism of PN41 were mainly determined by the interactions of the pentablock copolymers with different chain conformations in dilute aqueous solutions at various temperatures. SANS measurements were used to determine the temperature-dependent structural evolution of polymer micelles in aqueous solution. A NOESY study revealed that above the LSCT of PNIPAM, the interaction of PPO and PNIPAM protons increases and the distance between PPO and PNIPAM decreases.

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“…The adsorption behavior of polymers at solid-liquid interfaces is a long-standing research hot-topic because it is relevant to many technological applications and biological processes. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] In the past decades, the adsorption behavior of homo-polymers, diblock and triblock copolymers has been investigated in depth because of their relatively simple chain structures. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] More recently, attention has also been paid to the adsorption behavior of multiblock copolymers at solid-liquid interfaces.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of PNIPAmx-PEO20-PPO70-PEO20-PNIPAmx pentablock terpolymer on gold surfaces: effects of concentration, temperature, block length, and surface properties

Chen

et al. 2014

Phys. Chem. Chem. Phys.

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The effects of concentration, relative block length and environmental temperature as well as the surface chemical and wetting properties of solid substrates on the adsorption behaviors and mechanisms of a series of pentablock terpolymer poly(N-isopropylacrylamide)x-poly(ethylene oxide)20-poly(propylene oxide)70-poly(ethylene oxide)20-poly(N-isopropylacrylamide)x (PNIPAmx-PEO20-PPO70-PEO20-PNIPAmx or PNIPAmx-P123-PNIPAmx) with x of 10, 63 and 97 on gold were studied by using a quartz crystal microbalance (QCM) technique. It was found that increasing the solution concentration did not alter the adsorption mechanism of thickness growth mode but increase the adsorption amount of PNIPAm97-P123-PNIPAm97 on a bare gold substrate at 20 °C. Increasing the length x of PNIPAm block decreased the adsorption rate constant and shifted the adsorption mechanism from the densification adsorption process for PNIPAm10-P123-PNIPAm10 to the thickness growth mode for PNIPAm63-P123-PNIPAm63 and PNIPAm97-P123-PNIPAm97 on bare (unmodified) gold substrate at 20 °C. The adsorption mechanisms of PNIPAm97-P123-PNIPAm97 at 20 °C on the hydrophobic and hydrophilic gold surfaces were the thickness growth mode and densification adsorption process, respectively. A complex adsorption behavior with large adsorption amounts was observed at the lower critical solution temperature (LCST) of PNIPAm block, i.e. 34.7 °C, for the adsorption of PNIPAm97-P123-PNIPAm97 not only on hydrophobic gold substrates but also on hydrophilic gold substrates. The adsorption mechanism of PNIPAm97-P123-PNIPAm97 micelles at 45 °C was the densification adsorption process regardless of the surface wetting and chemical properties of gold substrate. Overall, the adsorption behavior and mechanism of PNIPAmx-P123-PNIPAmx pentablock terpolymers were mainly determined by the interactions of the pentablock terpolymers with different chain conformations in dilute aqueous solutions at various temperatures and the gold substrates with surface wetting and chemical properties.

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Adsorption characteristics of zwitterionic diblock copolymers at the silica/aqueous solution interface

Cited by 17 publications

References 47 publications

Stimulus responsive core-shell nanoparticles: synthesis and applications of polymer based aqueous systems

Stimulus responsive core-shell nanoparticles: synthesis and applications of polymer based aqueous systems

Synthesis, aggregation and adsorption behaviour of a thermoresponsive pentablock copolymer

Adsorption of PNIPAmx-PEO20-PPO70-PEO20-PNIPAmx pentablock terpolymer on gold surfaces: effects of concentration, temperature, block length, and surface properties

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