A General Approach toward Opal–Inverse Opal Interlocked Materials

Liu, Bing; Jin, Z.G.; Qu, Xiaozhong; Yang, Zhenzhong

doi:10.1002/marc.200600647

Cited by 19 publications

(19 citation statements)

References 21 publications

(45 reference statements)

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“…These uniform windows enable interconnectivity among the spherical pores throughout an inverse opal scaffold. The “window size” is typically about one fifth to one fourth of the diameter of templating microspheres, and the exact value can be varied by controlling the temperature and/or duration of time used for the necking process, as well as the concentration and viscosity of the infiltration solution 31…”

Section: Resultsmentioning

confidence: 99%

Neovascularization in Biodegradable Inverse Opal Scaffolds with Uniform and Precisely Controlled Pore Sizes

Choi

Zhang

MacEwan

et al. 2012

Adv Healthcare Materials

124

100

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The formation of a stable vascular network in a scaffold is one of the most challenging tasks in tissue engineering and regenerative medicine. Despite the common use of porous scaffolds in these applications, little is known about the effect of pore size on the neovascularization in these scaffolds. Here we fabricated poly(D, L-lactide-co-glycolide) inverse opal scaffolds with uniform pore sizes of 79, 147, 224, and 312 μm in diameter and then used them to systematically study neovascularization in vivo. Histology analyses revealed that scaffolds with small pores (<200 μm) favored the formation of vascular networks with small vessels at high densities and poor penetration depth. By contrast, scaffolds with large pores (>200 μm) favored the formation of vascular networks with large blood vessels at low densities and deep penetration depth. Based on the different patterns of vessel ingrowth as regulated by the pore size, we proposed a model to describe vascularization in a three-dimensional porous scaffold, which can potentially serve as a guideline for future design of porous scaffolds.

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Section: Resultsmentioning

confidence: 99%

Neovascularization in Biodegradable Inverse Opal Scaffolds with Uniform and Precisely Controlled Pore Sizes

Choi

Zhang

MacEwan

et al. 2012

Adv Healthcare Materials

124

100

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“…Some of these works were focused on temperature‐responsive polymers, including poly( N ‐isopropylacrylamide) (PNIPAAm), and its copolymer,36a, b, 37b poly(2‐(dimethylamino)ethyl methacrylate) (PDMAEMA)38 and poly( L ‐alanine) 39. In two other studies, the grafted polymer was cross‐linked or converted to carbon and subsequently isolated in the form of polymer nanotubes of diameter ∼500 nm36b or ordered macroporous carbon 37c. Gorman et al 36c.…”

Section: Controlled Radical Polymerization Initiated From Surface Of mentioning

confidence: 99%

Surface‐Initiated Controlled Radical Polymerization in Ordered Mesoporous Silicas

Kruk

2012

Israel Journal of Chemistry

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Recent advances in the synthesis of well-defined high-surface-area mesoporous silica/polymer composites via surface-initiated polymerization ("grafting from" method) and via attachment of preformed polymer chains ("grafting to" method) to surfaces of ordered mesoporous silicas (OMSs) are reviewed in the context of related research areas. Prior work on polymerizations in nanoscale confinements of OMSs is outlined and surface-initiated polymerization in disordered mesoporous silicas is briefly discussed. Early work on the surface-initiated radical polymerization initiated from OMS surface is reviewed and recent work involving OMS supports with large mesopores is discussed to illustrate the ability to form well-defined polymer brushes in nanopores using atom transfer radical polymerization (ATRP). The synthesis of polymer brushes in mesopores through the combination of ATRP or other polymerizations and the "click" chemistry is also outlined.

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“…2a ). Subsequently, the Br-containing SI-ATRP initiation sites were introduced on the surface of the SiO 2 microspheres by BITS 22 . The energy-disperse X-ray (EDX) pattern was shown in the Figure S2 ( Supporting Information ).…”

Section: Resultsmentioning

confidence: 99%

“…Unfortunately, the loss of the magnetic properties and poor recyclability still appear during the repeated catalytic runs, which restricts the practical applications 21 . In order to solve this formidable challenge, the interlocked polymeric microcapsules, which integrate numerous microcapsules into a targeted nanocomposite, have attracted intensive attention owing to their excellent recyclability and mechanical stability 22 23 . As catalyst supports, we can introduce open mouthed structure and interlocked architecture in the multifunctional polymeric microcapsules.…”

mentioning

confidence: 99%

Hierarchical Porous Interlocked Polymeric Microcapsules: Sulfonic Acid Functionalization as Acid Catalysts

Wang

Tian

et al. 2017

Sci Rep

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Owing to their unique structural and surface properties, mesoporous microspheres are widely applied in the catalytic field. Generally, increasing the surface area of the specific active phase of the catalyst is a good method, which can achieve a higher catalytic activity through the fabrication of the corresponding catalytic microspheres with the smaller size and hollow structure. However, one of the major challenges in the use of hollow microspheres (microcapsules) as catalysts is their chemical and structural stability. Herein, the grape-like hypercrosslinked polystyrene hierarchical porous interlocked microcapsule (HPIM-HCL-PS) is fabricated by SiO2 colloidal crystals templates, whose structure is the combination of open mouthed structure, mesoporous nanostructure and interlocked architecture. Numerous microcapsules assembling together and forming the roughly grape-like microcapsule aggregates can enhance the structural stability and recyclability of these microcapsules. After undergoing the sulfonation, the sulfonated HPIM-HCL-PS is served as recyclable acid catalyst for condensation reaction between benzaldehyde and ethylene glycol (TOF = 793 h−1), moreover, exhibits superior activity, selectivity and recyclability.

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A General Approach toward Opal–Inverse Opal Interlocked Materials

Cited by 19 publications

References 21 publications

Neovascularization in Biodegradable Inverse Opal Scaffolds with Uniform and Precisely Controlled Pore Sizes

Neovascularization in Biodegradable Inverse Opal Scaffolds with Uniform and Precisely Controlled Pore Sizes

Surface‐Initiated Controlled Radical Polymerization in Ordered Mesoporous Silicas

Hierarchical Porous Interlocked Polymeric Microcapsules: Sulfonic Acid Functionalization as Acid Catalysts

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