Azobenzene‐Functionalized Cage Silsesquioxanes as Inorganic–Organic Hybrid, Photoresponsive, Nanoscale, Building Blocks

Liu, Yun; Yang, Wenyan; Liu, Hongzhi

doi:10.1002/chem.201406142

Cited by 65 publications

(82 citation statements)

References 82 publications

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“…Solid-state 13 C cross polarization (CP) magic angle spinning (MAS) NMR, 29 Si MAS NMR and 31 P high power decoupling (HPDEC) MAS NMR spectra were carried out on a Bruker Avance-500 NMR spectrometer operating under a magnetic eld strength of 9.4 T. A chemagnetics of 5 mm triple-resonance MAS probe was used to acquire 13 C, 29 Si and 31 P NMR spectra. Solution-state 1 H NMR spectra were measured with a Bruker Avance 300 spectrometer in CDCl 3 with tetramethylsilane as the internal standard.…”

Section: Methodsmentioning

confidence: 99%

“…[22][23][24][25][26][27][28][29] Recently, many hybrid porous polymers were prepared via the topology combination from cubic OVS with planar molecules, 30 tetrahedral molecules, 31,32 cubic molecules [33][34][35][36] and polymer. [22][23][24][25][26][27][28][29] Recently, many hybrid porous polymers were prepared via the topology combination from cubic OVS with planar molecules, 30 tetrahedral molecules, 31,32 cubic molecules [33][34][35][36] and polymer.…”

Section: Introductionmentioning

confidence: 99%

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Construction of bimodal silsesquioxane-based porous materials from triphenylphosphine or triphenylphosphine oxide and their size-selective absorption for dye molecules

Shen

Liu

2016

RSC Adv.

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Two novel hybrid porous polymers were easily prepared by the Friedel-Crafts reaction of octavinylsilsesquioxane with triphenylphosphine and triphenylphosphine oxide, respectively. They possessed unique bimodal pores with uniform micropores and mesopores centered at 1.5 nm and 3.7 nm, respectively, high surface areas up to 1105 m 2 g À1 , high thermal stability and an excellent sizeselective adsorption for dyes. These hybrid porous polymers are very promising in dye separation, water purification and treatment.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Construction of bimodal silsesquioxane-based porous materials from triphenylphosphine or triphenylphosphine oxide and their size-selective absorption for dye molecules

Shen

Liu

2016

RSC Adv.

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“…85 In particular, colloidal monolayers have been used to create porous, graded-index materials with low reflectivity by, for example, plasma etching of colloidal monolayers, 194 inverting the monolayer, 95 or using the monolayer as an etching mask to generate pillars. 166,187,195 To reduce the reflection from the top surface of solar cells, many methods are used to generate porous materials with the proper optical thickness and effective index for optimal transmission. A recent perspective discusses many of these methods.…”

Section: Factors Affecting Optical Applicationsmentioning

confidence: 99%

A colloidoscope of colloid-based porous materials and their uses

et al. 2016

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Nature evolved a variety of hierarchical structures that produce sophisticated functions. Inspired by these natural materials, colloidal self-assembly provides a convenient way to produce structures from simple building blocks with a variety of complex functions beyond those found in nature. In particular, colloid-based porous materials (CBPM) can be made from a wide variety of materials. The internal structure of CBPM also has several key attributes, namely porosity on a sub-micrometer length scale, interconnectivity of these pores, and a controllable degree of order. The combination of structure and composition allow CBPM to attain properties important for modern applications such as photonic inks, colorimetric sensors, self-cleaning surfaces, water purification systems, or batteries. This review summarizes recent developments in the field of CBPM, including principles for their design, fabrication, and applications, with a particular focus on structural features and materials' properties that enable these applications. We begin with a short introduction to the wide variety of patterns that can be generated by colloidal self-assembly and templating processes. We then discuss different applications of such structures, focusing on optics, wetting, sensing, catalysis, and electrodes. Different fields of applications require different properties, yet the modularity of the assembly process of CBPM provides a high degree of tunability and tailorability in composition and structure. We examine the significance of properties such as structure, composition, and degree of order on the materials' functions and use, as well as trends in and future directions for the development of CBPM.

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“…[4][5][6] Such surface coatings nd applications in structural coloration, 7,8 light management in solar cells, 9 anti-reective coatings, [10][11][12] or to impart selfcleaning and superhydrophobic properties.…”

Section: Introductionmentioning

confidence: 99%

Tailoring re-entrant geometry in inverse colloidal monolayers to control surface wettability

et al. 2016

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Controlling the microscopic wetting state of a liquid in contact with a structured surface is the basis for the design of liquid repellent as well as anti-fogging coatings by preventing or enabling a given liquid to infiltrate the surface structures. Similarly, a liquid can be confined to designated surface areas by locally controlling the wetting state, with applications ranging from liquid transport on a surface to creating tailored microenvironments for cell culture or chemical synthesis. The control of the wetting of a low-surfacetension liquid is substantially more difficult compared to water and requires surface structures with overhanging features, known as re-entrant geometries. Here, we use colloidal self-assembly and templating to create two-dimensional nanopore arrays with tailored re-entrant geometry. These pore arrays, termed inverse monolayers, are prepared by backfilling a sacrificial colloidal monolayer with a silica sol-gel precursor material. Varying the precursor concentration enables us to control the degree to which the colloids are embedded into the silica matrix. Upon calcination, nanopores with different opening angles result. The pore opening angle directly correlates with the re-entrant curvature of the surface nanostructures and can be used to control the macroscopic wetting behavior of a liquid sitting on the surface structures. We characterize the wetting of various liquids by static and dynamic contact angles and find correlation between the experimental results and theoretical predictions of the wetting state based on simple geometric considerations. We demonstrate the creation of omniphobic surface coatings that support Cassie-Baxter wetting states for liquids with low surface tensions, including octane (g ¼ 21.7 mN m À1). We further use photolithography to spatially confine such low-surface-tension liquids to desired areas of the substrate with high accuracy.

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Azobenzene‐Functionalized Cage Silsesquioxanes as Inorganic–Organic Hybrid, Photoresponsive, Nanoscale, Building Blocks

Cited by 65 publications

References 82 publications

Construction of bimodal silsesquioxane-based porous materials from triphenylphosphine or triphenylphosphine oxide and their size-selective absorption for dye molecules

Construction of bimodal silsesquioxane-based porous materials from triphenylphosphine or triphenylphosphine oxide and their size-selective absorption for dye molecules

A colloidoscope of colloid-based porous materials and their uses

Tailoring re-entrant geometry in inverse colloidal monolayers to control surface wettability

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