Nanostructured polymeric yolk–shell capsules: a versatile tool for hierarchical nanocatalyst design

Sanchez‐Ballester, Noelia M.; Rydzek, Gaulthier; Pakdel, Amir; Anjaneyulu, Oruganti; Hasegawa, Kotone; Mitome, Masanori; Golberg, Dmitri; Hill, Jonathan P.; Abe, Hideki; Ariga, Katsuhiko

doi:10.1039/c6ta03311c

Cited by 16 publications

(7 citation statements)

References 57 publications

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“…12). 104 The catalysts tested were: PANI nanocapsules loaded with Cu ions, Cu-yolk, Cu-yolk in Cu-shell, Cu-yolk in Au-shell, a physical mixture of Cu-yolks and Au-shells, and commercial Cu NPs. The hierarchical structure Cu-yolk in Au-shell gave the most effective catalyst, converting 82% of the substrate at 300 °C after 53 minutes.…”

Section: Confinement By Encapsulationmentioning

confidence: 99%

Making more with less: confinement effects for more sustainable chemical transformations

et al. 2022

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Section: Confinement By Encapsulationmentioning

confidence: 99%

Making more with less: confinement effects for more sustainable chemical transformations

et al. 2022

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“…The presence of aromatic cycles in such polymers also confers them with a hydrophobic character and self-assembling properties that enable them not only to act as weak polyelectrolytes but also as structure directing nano-units ( Figure 2 B). For instance, PANI self-organization has been exploited to design nanostructured colloids [ 77 ] and coatings [ 61 , 78 ], which are optimized as catalytic supports and energy storage platforms, respectively. Accordingly, several self-organized structured polyvinylpyrridine sensors have been reported [ 79 ].…”

Section: Weak Polyelectrolytes Layers For Stimuli-responsive Surfacesmentioning

confidence: 99%

Weak Polyelectrolytes as Nanoarchitectonic Design Tools for Functional Materials: A Review of Recent Achievements

et al. 2022

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The ionization degree, charge density, and conformation of weak polyelectrolytes can be adjusted through adjusting the pH and ionic strength stimuli. Such polymers thus offer a range of reversible interactions, including electrostatic complexation, H-bonding, and hydrophobic interactions, which position weak polyelectrolytes as key nano-units for the design of dynamic systems with precise structures, compositions, and responses to stimuli. The purpose of this review article is to discuss recent examples of nanoarchitectonic systems and applications that use weak polyelectrolytes as smart components. Surface platforms (electrodeposited films, brushes), multilayers (coatings and capsules), processed polyelectrolyte complexes (gels and membranes), and pharmaceutical vectors from both synthetic or natural-type weak polyelectrolytes are discussed. Finally, the increasing significance of block copolymers with weak polyion blocks is discussed with respect to the design of nanovectors by micellization and film/membrane nanopatterning via phase separation.

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“…Since the hybridosomes can be synthesized by using a large range of NPs, 21 the transferability of this chemical versatility to the electro-clicked films was investigated. The possibility of assembling nanocapsule films based on a different choice of NPs would indeed open perspectives in several fields of applications including catalysis, [40][41][42] energy storage, 10,43 optoelectronics, 44 sensing 45 and controlled release 21,39 For example, another type of hybridosome has been synthesized by using CdSe@ZnS QD, IONPs and PAA-CRCH as building blocks. The resulting hybridosomes exhibit the same morphology as nanocapsules entirely composed of IONPs.…”

Section: Preservation Of Hybridosome S S Properties In the Filmmentioning

confidence: 99%

Electro-click construction of hybrid nanocapsule films with triggered delivery properties

Sciortino

Rydzek

Grasset

et al. 2018

Phys. Chem. Chem. Phys.

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Hollow nanocapsules (named Hybridosomes®) possessing a polymer/nanoparticle shell were used to covalently construct hybrid films in a one-pot fashion. The alkyne bearing organic/inorganic Hybridosomes® were reticulated with azide bearing homobifunctional polyethyleneglycol (PEG) linkers, by using an electro-click reaction on F-SnO (FTO) electrodes. The coatings were obtained by promoting the Cu(i)-catalyzed click reaction between alkyne and azide moieties in the vicinity of the electrode by the electrochemical generation of Cu(i) ions. The physicochemical properties of the covalently reticulated hybrid films obtained were studied by SEM, AFM, UV-vis and fluorescence spectroscopy. The one-pot covalent click reaction between the nanocapsules and the PEG linkers in the film did not affect the desirable features of the Hybridosomes® i.e. their hollow nanostructure their chemical versatility and their pH-sensitivity. Consequently, both the composition and the cargo-loading of the Hybridosomes® films could be tuned, demonstrating the versatility of these hybrid coatings. For example, the Hybridosome® films were used to encapsulate and release a bodipy fluorescent probe in response to either a pH drop or the application of an oxidative +1 V potential (vs. Ag/AgCl) at the substrate. By advancing the field of electro-synthesized films a step further toward the design of complex physicochemical interfaces, these results open perspectives for multifunctional coatings where chemical versatility, controllable stability and a hollow nanostructure are required.

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Nanostructured polymeric yolk–shell capsules: a versatile tool for hierarchical nanocatalyst design

Abstract: All polymeric yolk–shell nanocapsules offer tunable platforms for nanostructured catalyst design including hierarchical architectures, allowing the on-demand synthesis of catalysts.

Cited by 16 publications

References 57 publications

Making more with less: confinement effects for more sustainable chemical transformations

Making more with less: confinement effects for more sustainable chemical transformations

Weak Polyelectrolytes as Nanoarchitectonic Design Tools for Functional Materials: A Review of Recent Achievements

Electro-click construction of hybrid nanocapsule films with triggered delivery properties

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