Macromolecule‐to‐Amphiphile Conversion Process of a Polyoxometalate–Polymer Hybrid and Assembled Hybrid Vesicles

Yu, Xiao; Han, Yaokun; Xia, Nan; Hu, Min‐Biao; Zheng, P.; Wang, Wei

doi:10.1002/chem.201201187

Cited by 41 publications

(34 citation statements)

References 142 publications

(18 reference statements)

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“…We selected inorganic polyoxometalates (POMs) and organic polymers as building blocks to construct POM-polymer hybrid materials. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] In the specific design of a POM-polymer hybrid molecule, a Wells-Dawson-type POM cluster was used as the inorganic building block because it could be covalently modified, [29] and the organic block was commercially available poly(ethylene glycol) (PEG). [7,8] Organic polymers were selected for their ease of processability and attractive mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Bottom‐Up Hybridization: A Strategy for the Preparation of a Thermostable Polyoxometalate–Polymer Hybrid with Hierarchical Hybrid Structures

Tang

et al. 2014

ChemPlusChem

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A bottom‐up strategy for the preparation of hierarchical hybrid materials with good thermostability is reported. The hybrid molecule was constructed from a Wells–Dawson‐type polyoxometalate (POM) cluster and a poly(ethylene glycol) (PEG) chain through covalent‐bond formation. The large distinction between the POM cluster and PEG chain results in a microphase separation to form POM and PEG layers that further alternatively arrange into hybrid lamellae with a sub‐20 nm thickness. Then the hybrid lamellae could simultaneously organize into spherulitic superstructures. Because of this hierarchical structuring, strong electrostatic interactions between POM clusters are maximized within the POM layers. This gives rise to thermostability. Structurally, the hybrid lamellae and the superstructures are unchanged, even at 160 °C, and indeed the shear storage modulus of the hybrid material remains nearly constant within this same temperature range. This study demonstrates the concept of bottom‐up hybridization, in which rationally selecting building blocks, designing the hybrid molecule, and then manipulating hierarchical structures can generate thermostable hybrid materials.

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Section: Introductionmentioning

confidence: 99%

Bottom‐Up Hybridization: A Strategy for the Preparation of a Thermostable Polyoxometalate–Polymer Hybrid with Hierarchical Hybrid Structures

Tang

et al. 2014

ChemPlusChem

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“…The vesicles exhibit a bilayer membrane, with the POM clusters located in the middle of the membrane. The calculated thickness of the membrane is 64 nm, which is a huge value for bilayer membranes 42…”

Section: Metal Species As Integral Constituents Of the I‐surf Headmentioning

confidence: 98%

Hybrid Surfactant Systems with Inorganic Constituents

2013

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Surfactants are molecules of enormous scientific and technological importance, which are widely used as detergents, emulsifiers, and for the preparation of diverse nanostructures. Their fascinating ability to form self-organized structures, such as micelles or liquid crystals, originate from their amphiphilic architecture-a polar head group linked to a hydrophobic chain. While almost all known surfactants are organic, a new family of surfactants is now emerging, which combines amphiphilic properties with the advanced functionality of transition-metal building blocks, for example, redox or catalytic activity and magnetism. These hybrid surfactants exhibit novel self-organization features because of the unique size and electronic properties of the metal-containing entities.

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“…Figure shows recent examples of giant surfactants based on various functionalized MNPs including carboxylic‐functionalized POSS, carboxylic‐functionalized C 60 , POM, and proteins . Molecular topology could also be precisely controlled for these giant surfactants.…”

Section: Design and Synthesis Of Giant Surfactantsmentioning

confidence: 99%

Giant surfactants based on molecular nanoparticles: Precise synthesis and solution self‐assembly

Dong

et al. 2014

J Polym Sci B Polym Phys

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Giant surfactants are polymer-tethered molecular nanoparticles (MNPs) and can be considered as a subclass of giant molecules. The MNPs serve as functionalized heads with persistent shape and volume, which may vary in size, symmetry, and surface chemistry. The covalent conjugation of MNPs and polymer tails affords giant surfactants with diverse composition and architecture. Synthetic strategies such as "graftingfrom" and "grafting-onto" have been successfully applied to the precise synthesis of giant surfactants, which is further facilitated by the emergence of "click" chemistry reactions. In many aspects, giant surfactants capture the essential features of small-molecule surfactants, yet they have much larger sizes. They bridge the gap between small-molecule surfactants and traditional amphiphilic macromolecules. Their self-assembly behaviors in solution are summarized in this Review. Micelle formation is affected not only by their primary chemical structures, but also by the experimental conditions. This new class of materials is expected to deliver general implications on the design of novel functional materials based on MNP building blocks in the bottom-up fabrication of well-defined nanostructures.

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Macromolecule‐to‐Amphiphile Conversion Process of a Polyoxometalate–Polymer Hybrid and Assembled Hybrid Vesicles

Cited by 41 publications

References 142 publications

Bottom‐Up Hybridization: A Strategy for the Preparation of a Thermostable Polyoxometalate–Polymer Hybrid with Hierarchical Hybrid Structures

Bottom‐Up Hybridization: A Strategy for the Preparation of a Thermostable Polyoxometalate–Polymer Hybrid with Hierarchical Hybrid Structures

Hybrid Surfactant Systems with Inorganic Constituents

Giant surfactants based on molecular nanoparticles: Precise synthesis and solution self‐assembly

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