2017
DOI: 10.1039/c6nr07416b
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Fabrication of colloidal crystals composed of pore-expanded mesoporous silica nanoparticles prepared by a controlled growth method

Abstract: Colloidal crystals composed of mesoporous silica nanoparticles (MSNs) are expected to have various applications because of their unique hierarchical structures and tunable functions. The expansion of the mesopore size is important for introducing guest species which cannot be accommodated by using conventional colloidal crystals of MSNs; however, the preparation of MSNs with a controllable pore size, suitable for the fabrication of colloidal crystals, still remains a challenge. In this study, we fabricated col… Show more

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Cited by 32 publications
(23 citation statements)
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“…The synthesis of LPMSNs was performed as already described [16]. Monodispersed NPs with 100 nm diameter were observed by transmission electron microscopy (TEM) images and had 7 nm in pore diameter radial mesopores (Figure 1).…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The synthesis of LPMSNs was performed as already described [16]. Monodispersed NPs with 100 nm diameter were observed by transmission electron microscopy (TEM) images and had 7 nm in pore diameter radial mesopores (Figure 1).…”
Section: Resultsmentioning
confidence: 99%
“…Indeed, these nanoparticles (NPs) exhibit adjustable diameters (10 to 200 nm) and pore size (2–15 nm), leading to wide ranges of encapsulated drugs and biomolecules. The synthesis of these NPs, especially those presenting a large pore and which are targeted, has recently been performed [16] and both methods for their preparation and colloidal stability studies have been reviewed [17]. Large-pore mesoporous silica nanoparticles (LPMSNs) are of interest for the delivery of large molecules, such as nucleic acids or peptides [18].…”
Section: Introductionmentioning
confidence: 99%
“…The use of colloidal crystals as templates for the synthesis of various mesoporous structures has gained adequate recognition due to their ordered interparticle pores and other desirable characteristics [ 35 ]. Yang et al prepared bimodal ordered porous silica structures with mesoporous macropore walls, which were formed from polystyrene colloidal crystal templates.…”
Section: Strategies To Synthesize Mesoporous Silica Catalytic Hostmentioning
confidence: 99%
“…Photonic crystal devices defined as periodic nanostructures of dielectric materials with different refractive indices, [ 23,27 ] particularly 3D PC devices, [ 28 ] promising complete control over the photons emission and transmission in space due to the complete photonic bandgaps attributed to their periodic nanostructures. [ 11,20,29,30 ] Although most emergency applications take advantage of light reflection properties in fundamental sciences (Related to reflective coatings on lenses, [ 31,32 ] sensors, [ 33–35 ] color pigments in paints and inks, [ 36,37 ] energy management, [ 38–40 ] waveguides for directing the propagation of light along a specific path, [ 41,42 ] highly reflective mirrors in laser cavities, [ 43,44 ] and many other optical components), and here in order to obtain high transparency, we subtly control the optical bandgap beyond visible light by controlling the size of the PC nanospheres. As shown in Figure a, the optical properties of transparent optical devices can be described by Bragg's law, as shown in the following equations, [ 45,46 ] λ = 2dn2sin2θ d = 2/3 D n = fspherensphere2+fairnair2 where d is the distance between two neighboring crystalline planes in the (111) direction for a face‐centered cubic (fcc) close‐packed structure, and its relation with the sphere diameter D is shown in Equation ().…”
Section: Figurementioning
confidence: 99%