Template Synthesis of Hierarchically Structured Composites

Wei, Wei; Yang, Zhenzhong

doi:10.1002/adma.200800700

Cited by 35 publications

(24 citation statements)

References 29 publications

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“…Hierarchical fabrication at the nano‐ and microscale to integrate multi‐functional composite materials has been of great challenge and increasing interest in chemistry, biology, and materials science 5, 11. The hierarchical composites have promising applications in the fields of adsorption, separation, sensing, drug release/delivery, and catalysis 12.…”

Section: Introductionmentioning

confidence: 99%

Hierachically Structured Hollow Silica Spheres for High Efficiency Immobilization of Enzymes

Cao

Long

Zhao

et al. 2012

Adv Funct Materials

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In this work, the fi rst example of a hierarchically structured hollow silica system is reported without any chemical modifi cation to the enzyme involved in the process. The leaching of the physically adsorbed enzyme is substantially restrained in comparison to pure hollow silica supports. The hierarchical architecture is composed of the ordered hollow silica spheres with a shellin-shell structure. This rationally integrated architecture, which serves as the host for glucose oxidase immobilization, displays many signifi cant advantages, including increases in mechanical stability, enzyme loading, and bioactivity, and a decrease in enzyme leaching compared to existing pure hollow silica matrices. This facilitates further multifarious applications for enhanced enzyme immobilization, biosensors, and biocatalysis.

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Section: Introductionmentioning

confidence: 99%

Hierachically Structured Hollow Silica Spheres for High Efficiency Immobilization of Enzymes

Cao

Long

Zhao

et al. 2012

Adv Funct Materials

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“…Many other monomers can be used to swell the core−shell particles, 28,29 composition of the polymer lobe is broadly controlled. For example, using the MPS/DVB mixture instead of the St/DVB mixture, anisotropic Janus poly(MPS)@titania composite particles are achieved ( Figure S9b, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Robust Anisotropic Composite Particles with Tunable Janus Balance

Liu

Liang

et al. 2012

Macromolecules

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We report a general emulsion approach to protrude a lobe by swelling the polymer core from a core−shell structure, achieving anisotropic Janus composite particles with tunable chemistry, shape, size, and size ratio of the two parts thus Janus balance. Oil-in-water emulsion is employed to swell a polymer core through the crack open hole within the shell, and the core protrusion is restricted in the particle/oil confined compartments enveloped with surfactant. When monomers are used as the oil solvents, cross-linking can strengthen the polymer lobe to tolerate against organic solvents. By tuning polymerization time and monomer/particle weight ratio, the size ratio of the polymer/inorganic parts thus Janus balance of the composite particles is continuously tunable across from more hydrophilic to more lipophilic. The robust anisotropic particles with tunable Janus balance can be further used as solid surfactants to tune microstructure of emulsions.

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“…Considerable attention has been attracted to the design and fabrication of materials with hierarchical structure, which could enable materials with enhanced physical and chemical properties, such as mechanical, thermal, optical, adsorption and catalytic properties. [1][2][3] Hierarchical structures are dened as the structures with a morphology on different length scales. Varied hierarchical structured materials including honeycomb-like materials, 4 mesoporous hollow spheres, 5 snow-man like particles, 6 raspberry-like materials, 7 etc.…”

Section: Introductionmentioning

confidence: 99%