Evaporation-Induced Self-Assembly: Nanostructures Made Easy

Brinker, C. Jeffrey; Lu, Yunfeng; Sellinger, Alan; Fan, Hongyou

doi:10.1002/(sici)1521-4095(199905)11:7<579::aid-adma579>3.3.co;2-i

Cited by 865 publications

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“…SiO2-CaO-P2O5-X (X= Ce2O3, Ga2O3 or ZnO) MBG powders are synthesized by the evaporation induced self-assembly (EISA) method [23]. As reactants are generally used tetraethyl orthosilicate, triethyl phosphate, calcium nitrate tetrahydrate and cerium, gallium or zinc nitrates that are dissolved in ethanol and adding nitric acid as catalyst and Pluronic ® P123 as surfactant [24].…”

Section: Mesoporosity Textural Properties and Bioactivity Of Substitmentioning

confidence: 99%

Glasses in bone regeneration: A multiscale issue

Salinas

Vallet‐Regí

2016

Journal of Non-Crystalline Solids

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Highligths MBGs containing small amounts of Ga, Ce or Zn exhibit high in vitro bioactivity  The bioactive response is preserved after obtaining 3D scaffolds  These scaffolds are optimum candidates for bone tissue engineering applications  MBG scaffold with 4% ZnO exhibit bactericide action against S. Aureus  The effects of the extra ions is sometimes complex and needs to be investigated 2 Abstract 3D scaffolds based in mesoporous bioactive glasses (MBGs) are being widely investigated to use in bone tissue engineering (TE) applications. These scaffolds are often obtained by rapid prototyping (RP) and exhibit an array of interconnected pores in a hierarchy of sizes. The ordered mesopores network (around 4 nm in diameter), is optimal for the adsorption and release of bone inductor biomolecules, and the arrangement of macropores over 100 m facilitates the bone cell ingrowths and angiogenesis. Nevertheless MBGs composition can be varied almost infinitely at the atomic scale by including in the glass network oxides of inorganic elements with a therapeutic action. In this article the synthesis and characterization of MBG scaffolds based on the 80%SiO2-15%CaO-5%P2O5 (in mol-%) glass with substitutions up to 3.5% of Ga2O3 or Ce2O3 or 7.0% of ZnO is revisited. The substituent inclusion and the RP processing slightly decrease the surface area, the pore volume and the mesoporous order as well as their bioactive response in solutions mimicking blood plasma. However, these values still remain useful for bone TE applications. Results exhibiting the bactericide action of MBG scaffolds containing ZnO are also presented. KeywordsMesoporous bioactive glass scaffolds; Ga, Ce and Zn as therapeutical ions; bactericide capability; bone tissue engineering 3

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Section: Mesoporosity Textural Properties and Bioactivity Of Substitmentioning

confidence: 99%

Glasses in bone regeneration: A multiscale issue

Salinas

Vallet‐Regí

2016

Journal of Non-Crystalline Solids

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“…[1][2][3][4] For example, evaporationinduced self-assembly (EISA) takes advantage of the capillary force on nanoparticles, 5,6 while selective wetting of inverse opal films allows liquid identification. 7 Most of the previous work was carried out on a hard solid surface and the solid substrate deformation was rarely explored.…”

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confidence: 99%

Evaporation induced wrinkling of graphene oxide at the nanoparticle interface

Wang

Liu

2015

Nanoscale

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With the thickness of only a single atomic layer, graphene displays many interesting surface properties. A general observation is that wrinkles are formed on graphene oxide (GO) when it is dried in the presence of adsorbed inorganic nanoparticles. In this case, evaporation induced wrinkling is not an elastic deformation but is permanent. Understanding the nanoscale force of wrinkle formation is important for device fabrication and sensing. Herein, we employ surface functionalized gold nanoparticles (AuNPs) as a model system. All tested AuNPs induced wrinkling, including those capped by DNA, polymers and proteins. The size of AuNPs is less important compared to the property of solvent. Wrinkle formation is attributed to drying related capillary force acting on the GO surface, and a quantitative equation is derived. After drying, the adsorption affinity between GO and AuNPs is increased due to increased contact area.

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“…17 The difference in surface free energy between a bare and lipid bilayer-coated glass surfaces under water is the driving force that drags the bilayer from an area of excess lipid to uncovered areas. 18,19 Other methods to prepare supported membranes include the Langmuir-Blodgett deposition, 15 spin coating, 20 evaporation induced self-assembly, 21 and more recently, dip-pen technology. 8 Each of these methods has inherent advantages with respect to the applications in which they will be used.…”

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confidence: 99%

“…For instance, the Langmuir-Blodgett deposition allows the deposition of asymmetric bilayers, 22 dip-pen technology facilitates the fabrication of biomolecular arrays, 8 spin coating enables the quick generation of highly oriented, homogeneous bilayer stacks with defined thickness, 20 and evaporation induced self-assembly permits the creation of patterned nanocomposites of dissimilar materials. 21 In some applications, exposure of the sample to air should be avoided, and solution-based deposition of supported bilayers is preferred; 22 such procedures would also be suitable for a wider class of surfaces, including hydrophobic surfaces 23 or, in principle, also solid particles such as silica or glass beads. 24,25 Tiberg et al, 26 for example, reported a simple method of this kind for preparing model lipid bilayers by coadsorption with a nonionic surfactant.…”

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confidence: 99%