Redox-responsive Pickering emulsion derived from the fabricated sheddable polymeric micelles

Yuan, Jun; Deng, Amin; Yang, Dong; Li, Huaming; Chen, Jian; Gao, Yong

doi:10.1016/j.polymer.2018.10.043

Cited by 19 publications

(10 citation statements)

References 71 publications

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“…The same group also connected the PMDA side chains to the PU backbone by cleavable S-S linkages, which imparted redox-responsiveness. 130 The cyclohexane-in-water Pickering emulsion stabilized by the micelles could be demulsified by reducing agents, for example, dithiothreitol. The Pickering emulsion stabilized with redox-responsive PU-g-PDMA was then used as a template for interfacial sol-gel reactions to prepare hollowed SiO2 microspheres, as shown in Fig.…”

Section: Graft Polymersmentioning

confidence: 99%

Polymers with advanced architectures as emulsifiers for multi-functional emulsions

Russell

2021

Mater. Chem. Front.

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Section: Graft Polymersmentioning

confidence: 99%

Polymers with advanced architectures as emulsifiers for multi-functional emulsions

Russell

2021

Mater. Chem. Front.

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“…Although high stability is important for long-term storage, demulsification is also critical in many applications where temporary stability is desired, for example, in oil transportation, biphasic catalysis, and emulsion polymerization. Stimuli-responsive emulsions have emerged to simplify the demulsification process by using environmental stimulus, such as CO 2 /N 2 , ,, redox reaction, − temperature, , pH, − light, , and magnetic field . Among these triggers, redox reaction has attracted considerable attention due to its promising applications in physiological environments.…”

Section: Introductionmentioning

confidence: 99%

“…Among these triggers, redox reaction has attracted considerable attention due to its promising applications in physiological environments. Ferrocene compounds and surfactants were reported to stabilize the redox-responsive Pickering emulsions. − In addition, disulfide or selenium-containing surfactants can also be used for redox-responsive Pickering emulsions. − …”

Section: Introductionmentioning

confidence: 99%

Redox-Responsive Oil-In-Dispersion Emulsions Stabilized by Similarly Charged Ferrocene Surfactants and Alumina Nanoparticles

Zhang

Jiang

et al. 2020

Langmuir

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A redox-responsive oil-in-dispersion emulsion was developed by using a cationic ferrocene surfactant (FcCOC 10 N) and Al 2 O 3 nanoparticles, in which the required concentrations of FcCOC 10 N and Al 2 O 3 nanoparticles are as low as 0.001 mM (≈0.005 cmc) and 0.006 wt %, respectively. Rapid demulsification can be successfully achieved through a redox trigger, resulting from the transition of FcCOC 10 N from a normal cationic surfactant form into a strongly hydrophilic Bola type form (Fc + COC 10 N). Moreover, Fc + COC 10 N together with the particles almost resides in the aqueous phase and can be recovered after the reduction reaction. Not only the amount of surfactant and nanoparticles are significantly reduced but also the emulsifier (surfactant and alumina) can be recycled and reused from the aqueous phase, which is a sustainable and economical strategy for various applications.

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“…For example, in fuel production, oil transfer, and emulsion polymerization, the emulsion requires only temporary stabilization and subsequent demulsification. Therefore, the Pickering emulsions responding to various stimuli have received considerable attention in recent years. − Various triggers such as light irradiation, , pH, − CO 2 , − temperature, magnetic field, , and specific ion concentration have been reported. Among these triggers, CO 2 is widely studied because of its low cost, environment friendly, and easily removed from the system .…”

Section: Introductionmentioning

confidence: 99%

Redox-Responsive Pickering Emulsions Based on Silica Nanoparticles and Electrochemical Active Fluorescent Molecules

Jiang

Sun

et al. 2019

Langmuir

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In this paper, we report a novel redox-responsive water-in-oil Pickering emulsion stabilized by negatively charged silica nanoparticles in combination with a trace amount of redox switchable fluorescent molecule ferrocene azine (FcA), in which ferrocene serves as a redox-sensitive group and anthryl unit serves as a fluorescence emission center. By alternately adding oxidants and reducing agents at a moderate condition, the amphiphilicity of silica nanoparticles changes because of the adsorption of Fc+A and the desorption of FcA on the silica surface. On the one hand, the stability of emulsions can be transformed between stable and unstable at ambient temperature via redox trigger and the regulation process can be cycled at least three times. On the other hand, the fluorescent intensity of the FcA molecule can be regulated by redox stimuli; thus, the change in fluorescent behavior of the emulsion droplets is observed upon redox cycles, which makes it useful in the fluorescent label of stimuli-responsive Pickering emulsions. This work provides a deep understanding of the regulation mechanism of Pickering emulsions upon redox stimuli and opens the new way for in situ fluorescent label of stimulus-responsive Pickering emulsions without introducing additional fluorescent molecules.

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Redox-responsive Pickering emulsion derived from the fabricated sheddable polymeric micelles

Cited by 19 publications

References 71 publications

Polymers with advanced architectures as emulsifiers for multi-functional emulsions

Polymers with advanced architectures as emulsifiers for multi-functional emulsions

Redox-Responsive Oil-In-Dispersion Emulsions Stabilized by Similarly Charged Ferrocene Surfactants and Alumina Nanoparticles

Redox-Responsive Pickering Emulsions Based on Silica Nanoparticles and Electrochemical Active Fluorescent Molecules

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