Mechanistic Insight into the Synthesis of Silica-Based “Matchstick” Colloids

Longbottom, Brooke W.; Rochford, Luke A.; Beanland, Richard; Bon, Stefan Antonius Franciscus

doi:10.1021/acs.langmuir.5b02645

Cited by 21 publications

(34 citation statements)

References 47 publications

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“…Reproduced with permissions from Ref. . Copyright (2012, 2015, 2015, 2016) American Chemical Society.…”

Section: Shape Modificationmentioning

confidence: 99%

“…Though these matchsticks were highly monodisperse, scalability remains an issue . Matchstick‐like rods were also prepared by preforming the metal oxide nanoparticles in the emulsion droplets before growing the rods (Figure b) . The nanoparticles acted like stabilizers concentrated at the periphery of the emulsion droplets.…”

Section: Shape Modificationmentioning

confidence: 99%

“…[29] Matchstick-like rods were also prepared by preforming the metal oxide nanoparticles in the emulsion droplets before growingt he rods (Figure 4b). [30,31] The nanoparticles acted like stabilizers concentrated at the periphery of the emulsion droplets. This anisotropic localization of the nanoparticles resulted in their concentration in the matchstick head.…”

Section: Shape Modificationmentioning

confidence: 99%

See 2 more Smart Citations

Finite‐Sized One‐Dimensional Silica Microstructures (Rods): Synthesis, Assembly, and Applications

Sharma

2017

ChemNanoMat

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Colloidal silica structures are very important for applications such as superhydrophobic, oleophobic, icephobic, and anti‐biofouling coatings, polymer–ceramic or metal–matrix composites, photon management, catalyst support, and drug delivery. In addition to various types of silica structures, a unique structure—silica rods—has been synthesized by employing the emulsion droplets made by adding water and citrate to polyvinylpyrrolidone pentanol solution. While significant progress has been made in modifying rod shape and chemistry, in rod assembly, and in rod applications, however, no review article has discussed the progress in this field. This Focus Review intends to highlight the developments in the synthesis, assembly, and application of these rods, and discuss the remaining challenges for precise control of size and shape, possible solutions, and potential applications.

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“…Reproduced with permissions from Ref. . Copyright (2012, 2015, 2015, 2016) American Chemical Society.…”

Section: Shape Modificationmentioning

confidence: 99%

Section: Shape Modificationmentioning

confidence: 99%

Section: Shape Modificationmentioning

confidence: 99%

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Finite‐Sized One‐Dimensional Silica Microstructures (Rods): Synthesis, Assembly, and Applications

Sharma

2017

ChemNanoMat

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“…Various anisotropic silica structures were prepared under different experimental parameters, such as the choice of precursor, relative concentration of the reagents and reaction temperature. [16][17][18][19][20][21] Particularly, more complex, segmented silica structures and related hybrid structures were prepared by simply regulating the reaction parameters during the one-dimensional growth. [22][23][24][25][26][27] This water-in-alcohol emulsion system has shown incomparable versatility in the controlled synthesis of anisotropic silica micro-/ nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of anisotropic silica colloids

Wang

Zhang

et al. 2017

RSC Adv.

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“…The nucleus then grows into a 1D nanorod through further deposition at the solid–liquid interface along the movement of the catalyst droplet. In the presence of seeds, to which the catalyst droplets are initially attached, the nucleation takes place at the interface between the seed and the catalyst droplet rather than the solution–liquid interface ,,. Therefore, the adsorption sites of catalyst droplets will directly determine the loci from which the 1D nanostructures grow.…”

Section: Figurementioning

confidence: 99%

Local‐Curvature‐Controlled Non‐Epitaxial Growth of Hierarchical Nanostructures

Zhang

et al. 2018

Angewandte Chemie

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Site-selective growth on non-spherical seeds provides an indispensable route to hierarchical complex nanostructures that are interesting for diverse applications.H owever,t his has only been achieved through epitaxial growth, which is restricted to crystalline materials with similar crystal structures and physicochemical properties.Anon-epitaxial growth strategy is reported for hierarchical nanostructures, where site-selective growth is controlled by the curvature of non-spherical seeds.T his strategy is effective for site-selective growth of silica nanorods from non-spherical seeds of different shapes and materials,such as a-Fe 2 O 3 ,NaYF 4 ,and ZnO.This growth strategy is not limited by the stringent requirements of epitaxy and is thus av ersatile general method suitable for the preparation of hierarchical nanostructures with controlled morphologies and compositions to open up av erity of applications in self-assembly,nanorobotics,catalysis,electronics,and biotechnology.The interest in the preparation of well-defined hierarchical nanostructures with increasing structural and compositional complexity is driven by their wide applications in selfassembly,e lectronics,p hotonics,c atalysis,a nd biotechnology. [1] During the past decades,the majority of hierarchical complex nanostructures,f or example,t etrapods,o ctapods, branched or tree-shaped nanowires,a nd one-dimensional (1D)/two-dimensional (2D) heterostructures,h ave been syn-thesized through seeded epitaxial growth methods. [2] For example,Zhang et al. reported the growth of hierarchical 1D/ 2D nanostructures through epitaxial growth of CdS and CdSe nanorods on selective facets of hexagonal-shaped semiconductor nanoplates. [3] However, owing to the demand of epitaxy,e pitaxial growth methods are restricted to the growth of hierarchical complex nanostructures consisting of crystalline materials. [4] Moreover,t he growing material and the seed should have almost identical crystal structures and, in most cases,similar physiochemical properties.T othis end, it is necessary to develop non-epitaxial growth routes that are potentially suitable for growing hierarchical hybrid nanostructures consisting of materials with different physicochemical properties.Forthe sake of structural complexity and anisotropy,nonspherical seeds are preferred for the growth of three-dimensional (3D) hierarchical nanostructures.I ntuitively,c ontrolled anisotropic growth of secondary nanostructures from selective areas on the surface of non-spherical seeds could provide an indispensable route to hierarchical nanostructures with greatly increased structural complexity.S ite-selective growth from specific exposed facets can be easily achieved during epitaxial growth, for example by tuning the growth direction. Fornon-epitaxial growth, ageneral mechanism for controlling the growth sites on non-spherical seeds with different morphologies and materials has not yet been discovered. Site-selective non-epitaxial growth on non-spherical seeds has met with very limited success only for seeds w...

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Mechanistic Insight into the Synthesis of Silica-Based “Matchstick” Colloids

Cited by 21 publications

References 47 publications

Finite‐Sized One‐Dimensional Silica Microstructures (Rods): Synthesis, Assembly, and Applications

Finite‐Sized One‐Dimensional Silica Microstructures (Rods): Synthesis, Assembly, and Applications

Synthesis of anisotropic silica colloids

Local‐Curvature‐Controlled Non‐Epitaxial Growth of Hierarchical Nanostructures

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