Bidirectional Nanoparticle Crossing of Oil–Water Interfaces Induced by Different Stimuli: Insight into Phase Transfer

Stocco, Antonio; Chanana, Munish; Su, Ge; Černoch, Peter; Binks, Bernard P.; Wang, Dayang

doi:10.1002/anie.201203493

Cited by 43 publications

(30 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other mechanisms have been reported for particle removal from interfaces that are not caused by an interface deformation, for instance due to changes in surface free energy of the particles [64].…”

Section: Expulsion Of Interfacial Materialsmentioning

confidence: 99%

Collapse mechanisms and extreme deformation of particle-laden interfaces

Garbin

2019

Current Opinion in Colloid & Interface Science

View full text Add to dashboard Cite

Section: Expulsion Of Interfacial Materialsmentioning

confidence: 99%

Collapse mechanisms and extreme deformation of particle-laden interfaces

Garbin

2019

Current Opinion in Colloid & Interface Science

View full text Add to dashboard Cite

“…Phase transfer across oil–water interfaces has been achieved for AuNPs functionalized with random copolymers of 2‐(2‐methoxyethoxy)ethyl methacrylate and oligo(ethylene glycol) methyl methacrylate . However, the polymer switching behavior is significantly affected by attachment to the NP surface, and bidirectional switching required careful adjustment of both temperature and aqueous phase ionic strength . Theoretical rationalization of these subtle effects based on thermodynamic considerations underlines the importance of understanding the influence of the nanosurface‐bound environment on molecular behavior.…”

Section: Manipulating Noncovalent Interactions For Nanoparticle Propmentioning

confidence: 99%

Manipulating the Monolayer: Responsive and Reversible Control of Colloidal Inorganic Nanoparticle Properties

Edwards

Kay

2015

ChemNanoMat

View full text Add to dashboard Cite

For aw ide range of nanomaterials, surface-bound molecules play ac entral role in defining properties, and are key to integration with other components-be they molecules, surfaces, or other nanoparticles. Predictable and general methodsf or manipulatingt he surface monolayer are therefore crucial to exploiting this new region of chemical space. This review highlights limitations of the few established methods for controlling nanoparticle-boundmolecular functionality,t hen focuses on emerging new strategies. In particular, approaches that can achieve stimuli-responsive and reversiblem odification of surface-bound molecules in colloidal solution are examined, with an emphasis on using these methods to control nanoparticle properties such as solventc ompatibility,c atalytic activity and cytotoxicity.F inally,t he outstanding challenges and future potential forp recisely controlled nanoparticle-bound monolayersa re discussed.

show abstract

“…For example, the high attachment energy of a hydrophobic NP to an interface is usually associated with increased stability; however, the importance of contact angle is still unclear. 8 Therefore, a systematic approach to elucidate the impact of nanoparticle surface Copyright: American Scientific Publishers chemistry represents a significant advance in the mechanistic understanding of nanoparticle fate and transport. Copolymers of di(ethylene glycol) methyl ether methacrylate (x = MeO 2 MA) and oligo(ethylene glycol) methyl ether methacrylate (y = OEGMA) display lower critical solution phenomena in aqueous systems that are tunable by the copolymer ratio (x:y), ionic strength, and temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nanoparticle Surface Chemistry on Adsorption and Fluid Phase Partitioning in Aqueous/Toluene and Cellular Systems

Gambinossi¹,

Lapides²,

Anderson³

et al. 2015

j nanosci nanotechnol

Self Cite

View full text Add to dashboard Cite

Copolymers of di(ethylene glycol) methyl ether methacrylate (x = MeO2MA) and oligo(ethylene glycol) methyl ether methacrylate (y = OEGMA) display lower critical solution phenomena in aqueous systems that are tunable by the copolymer ratio (x:y), ionic strength, and temperature. These properties enable tuning the hydrophobicity of macromolecular systems by variation of (x:y). For nanoparticles stabilized with these macromolecules, this provides a systematic approach to understanding the impact of surface chemistry, specifically hydrophobicity, on the equilibrium and transport properties of nanomaterials in biphasic systems. We synthesized a homologous series of gold nanoparticles capped by these copolymers, Au@(MeO2MA(x)-co-OEGMA(y)). By varying the copolymer 95:5 < (x:y) < 80:20 ratio, we studied the effect of surface hydrophobicity on the nanoparticle equilibrium adsorption isotherm and phase transfer at the aqueous-toluene interface. The increase in hydrophobicity from (x:y) = 80:20 to (x:y) = 95:5 is accompanied by an increase in the fractional coverage of the aqueous-toluene interface from f = 0.3 to f > 1, or multilayer adsorption and an increase in the characteristic adsorption timescale from τ(D) = 31 to τ(D) = 450 seconds. The equilibrium partition coefficient for the aqueous/toluene systems, K(T/W) is also a strong function of (x:y), increasing from K(T/W) (80:20) = 0.7 to K(T/W) (95:5) = 9.8. We also observed an increase in cellular uptake for increasing (x:y) suggesting that surface chemistry alone plays a significant role in intercellular transport processes.

show abstract

Bidirectional Nanoparticle Crossing of Oil–Water Interfaces Induced by Different Stimuli: Insight into Phase Transfer

Cited by 43 publications

References 27 publications

Collapse mechanisms and extreme deformation of particle-laden interfaces

Collapse mechanisms and extreme deformation of particle-laden interfaces

Manipulating the Monolayer: Responsive and Reversible Control of Colloidal Inorganic Nanoparticle Properties

Effect of Nanoparticle Surface Chemistry on Adsorption and Fluid Phase Partitioning in Aqueous/Toluene and Cellular Systems

Contact Info

Product

Resources

About