Colloidal particles may be considered as building blocks for materials, just like atoms are the bricks of molecules, macromolecules, and crystals. Periodic arrays colloids (colloidal crystals) have attracted much interest over last two decades, largely because their unique photonic properties. The archetype opal structures based on close-packed spheres submicrometer diameter. Interest in structuring materials at this length scale, but with more complex features ideally by self-assembly...

Inverse opals or three-dimensionally ordered macroporous (3DOM) materials, prepared by colloidal crystal templating (CCT) methods, possess distinctive structural features that are important for the design of photonic crystals, sensors, power sources, catalysts, and various other applications. In past decade, vast progress has been made in shaping these materials at length scales. It is now possible to prepare 3DOM a variety simple complex compositions, which pore sizes, shapes, skeletal...

Self-assembly of block copolymers (BCPs) has been developed as a promising approach for constructing photonic crystal (PC) microspheres dynamic optical modulation. However, high curvature in the center usually distorts periodic core structure, leading to an inconsistency bandgap and poor monochromaticity structural color. Herein, we report simple yet robust strategy fabricating responsive PC microcapsules polystyrene-b-poly(2-vinylpyridine) through self-emulsification strategy....

Monolithic pieces of hierarchically structured silica, containing both periodic macropores and mesopores with well-controlled architecture, are synthesized by dual templating methods. Colloidal crystal close-packed arrays poly(methyl methacrylate) spheres yields regular, highly interconnected a few hundred nanometers in diameter, nonionic surfactants produces mesoporosity (2.5−5.1 nm pore diameters) the macropore walls. Several distinct mesostructures can be achieved within silica skeleton,...

Shaped, mesoporous carbon nanoparticles (MSP-3) were prepared in high yield by a simple direct synthesis using block copolymer surfactant as the mesopore-directing agent and colloidal crystal to mold external shape of particles. The product consisted monodisperse nanocubes uniform nanospheres or tetrapods. contained regularly spaced, cagelike mesopores. orientation cubic unit cell describing mesopore symmetry coincided with templated cube faces.

Solar steam generation has attracted interest in recent years as a clean source for power and water treatment. To achieve high rate of generation, it is important the solar evaporator to not only have photothermal conversion efficiency but also large effective surface area evaporation. Herein, we report use PVA-based composite hydrogels evaporator, which inner channel sizes were adjusted through an ice-templating method. Although PVA been actively pursued promising material influence...

Multipodal nanoparticles (NPs) with controlled tethers are promising principal building blocks, useful for constructing more complex materials, much like atoms connected into molecules. Here we report colloidal sphere templating as a viable means to create tetrapodal NPs site-specific tethers. Amorphous sol−gel materials were molded by the template shaped that mimic tetravalent but on length scale of colloids. Synthetic methods developed modify only tips tetrapods range possible functional...

Abstract Kolloidale Partikel können genau wie Atome (die Bausteine der Moleküle, Makromoleküle und Kristalle) als Baueinheiten für Materialien betrachtet werden. Periodische Anordnungen von Kolloiden – kolloidale Kristalle haben in den letzten 20 Jahren viel Aufmerksamkeit erregt, im Wesentlichen wegen ihrer einzigartigen photonischen Eigenschaften. Die archetypischen Opalstrukturen beruhen auf dicht gepackten Kügelchen mit Durchmessern Submikrometerbereich. Das Interesse an Strukturierung...

Shipshape: Mesoporous silica nanocubes and spheroids with controllable bimodal size distributions were synthesized within a colloidal crystal template by using weak acid catalyst to effect the disassembly of an inverse opal skeleton. The shaped nanoparticles could be replicated nanocasting obtain carbon or polymer similar morphologies. Supporting information for this article is available on WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z604147_s.pdf from author. Please note:...

Cube it: Ordered three-dimensional arrays of nanocubes with an unusual simple-cubic packing geometry are formed when a TiO2–P2O5 inverse opal structure disassembles and self-reassembles during synthesis involving face-centered-cubic colloidal crystal template. In this way, it may be possible to alter nanoparticle shapes achieve more-complex geometries in systems. Supporting information for article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z701553_s.html or...

This work presents a monolithic integrated supercapacitor (SC), where all the SC components, including current collectors, electrodes and solid-state electrolyte, are arranged in porous thin support, thus resulting significant reduction device volume good interface between each component.

Cylindrical block copolymer (BCP) micelles could be considered as two-dimensional (2D) soft confined space for assembly of inorganic nanoparticles (NPs). However, the deformable boundary and complex interaction between BCP NPs resulted in a nanocomposite system, where cylindrical assemblies would easily deform with increasing NP content, usually distribute randomly micelles. Nowadays, it is desirable to maintain structures high content tailor packing style inside cylinders. Here, we report...

Tungsten and tungsten–molybdenum alloys (95 : 5 w/w) with a three-dimensionally ordered macroporous (3DOM) structure were prepared by infiltration of poly(methyl methacrylate) colloidal crystals acetylated peroxotungstic acid peroxomolybdic as solution precursors. In contrast to previous preparations, using these precursors, it was possible maintain the original metal ratio in product obtained after hydrogen reduction, thereby permitting better control over composition. To evaluate...

Oxide nanoparticles (NPs) are typically synthesized from the assembly of atoms, ions or other species by bottom-up methods. Here we report an alternative, top-down approach as a general route to synthesize porous and nonporous oxide/phosphate nanocubes. The method is based on construction three-dimensionally ordered macroporous (3DOM) structures via colloidal crystal templating, followed spontaneous disassembly these into particulate building blocks assisted introduction amphiphilic...

Modification of nanorods (NRs) with functional polymer ligands is great significance to enhance their surface chemistry and prompt applications in many fields (e.g., photothermal therapy, bioimaging, catalysis). However, the regioselective modification AuNRs still remains a challenge. Herein, we introduce facile yet versatile strategy achieve through solvent quality-mediated strategy. By employing poor original ligand cetyltrimethylammonium bromide (CTAB) as medium modification, would...

We demonstrate a synthetic strategy toward functional, composite porous materials by incorporating functionalized silica spheres into hierarchically matrix. Monodisperse mesoporous decorated with organic probe molecules for visual Cd2+ ion detection were coated thin protecting poly(methyl methacrylate) (PMMA) layer to form core−shell particles. When these particles redispersed in mixture of precursor, surfactant and hydrochloric acid, structured films could be prepared spin-coating aging....

Capillary condensation was used to establish connections in colloidal clusters and 1D chains with high regional selectivity. This vapor-phase process produced conjugated anisotropic functionality. The capillary method is simple can be applied a wide range of materials. It tolerate geometric variations even permits conjugation spatially separated particles. selective deposition also modulate the functionality on colloid surfaces, producing tip-tethered nanosized building blocks that may...

This article highlights methods of producing uniform, shaped nanoparticles and one-dimensional, two-dimensional three-dimensional arrays these by disassembly techniques. An extended network is prepared holography, colloidal crystal templating or with surfactants block copolymers. continuous structure cleaved at weak connection points through internal external forces, uniformly particles these, which provide a kit potential building blocks for other structures composed nanoparticles.

Tipptopp: In einem Kolloidkristalltemplat gelang die Synthese mesoporöser Siliciumoxid-Nanowürfel und -Nanokugeln mit einstellbarer bimodaler Größenverteilung mithilfe einer schwachen Säure als Katalysator des Abbaus eines inversen Opalgerüsts. Die Nanopartikel konnten durch Nanogießen repliziert werden, wobei Kohlenstoff- oder polymere ähnlichen Morphologien entstanden.