Multiple-periodic structures of self-organized honeycomb-patterned films and polymer nanoparticles hybrids

Yabu, Hiroshi; Inoue, Kouta; Shimomura, Masatsugu

doi:10.1016/j.colsurfa.2005.10.082

Cited by 31 publications

(24 citation statements)

References 24 publications

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“…Interestingly, by combining molecular self-assembly and nanofabrication technologies, honeycomb porous films have been employed as templates for directional deposition of inorganic particles into the hydrophilic spherical cavities. [7][8][9][10][11][12] The condensed water-droplets act as the microreactor for the synthesis of micron particles, [7] and the resultant macropores of the films provide spatial confinement for embedding particles. [8,9] On the other hand, the colloidal particles tend to adsorb and self-assemble at the immiscible fluid/fluid interface within a minimization of interfacial tension energy, usually resulting in a ring-like array.…”

Section: Introductionmentioning

confidence: 99%

“…[7][8][9][10][11][12] The condensed water-droplets act as the microreactor for the synthesis of micron particles, [7] and the resultant macropores of the films provide spatial confinement for embedding particles. [8,9] On the other hand, the colloidal particles tend to adsorb and self-assemble at the immiscible fluid/fluid interface within a minimization of interfacial tension energy, usually resulting in a ring-like array. [10][11][12] In 1994, Francois et al firstly reported that condensed water-droplets as a dynamic template, [13] the so-called "breath figure" method, [14,15] are used to prepare highly ordered honeycomb films.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Functions of Hybrid Membranes with Rings of Ag NPs Anchored at the Edges of Highly Ordered Honeycomb‐Patterned Pores

Dong

Yang

et al. 2013

Chemistry A European J

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We report a new, simple strategy to apply honeycomb films for the patterning of colloidal particles. By combination of a "bottom-up" breath figure method and the electrochemical properties of the honeycomb films of ferrocenyl-based oligomers, highly ordered hybrid membranes coated with ring-like patterning of 0D- and 1D-Ag nanoparticles (NPs) have been fabricated. One interesting phenomenon is that the nucleation and adsorption of Ag dots occurred preferentially at the edges of the micropores. The hybrid membranes exhibited richly electrochemical activities towards reduction of iodate and enhanced effectively catalytic reduction of organic dyes. We believe that this method can be used to decorate and/or assemble functional metal NPs such as Au, Pd, and Cu on honeycomb-patterned materials for the further applications of photonics, sensors, and catalysis.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation and Functions of Hybrid Membranes with Rings of Ag NPs Anchored at the Edges of Highly Ordered Honeycomb‐Patterned Pores

Dong

Yang

et al. 2013

Chemistry A European J

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“…Chloroform was purchased from Wako Chemical Industry Co. Ltd. (Tokyo, Japan). Polymer 1 (see the Supporting Information) was synthesized according to the literature …”

Section: Methodsmentioning

confidence: 99%

Thermally Stable Honeycomb‐Patterned Porous Films of a Poly(L‐lactic acid) and Poly(D‐lactic acid) Stereo Complex Prepared Using the Breath Figure Technique

Abe

Hirai

Yabu

2016

Macro Materials & Eng

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cells. Scaffolds with pores ranging from subcellular to cellular dimensions are particularly attractive materials for understanding the behavior of cells growing on porous scaffolds. However, porous materials currently available for use as cell culture scaffolds have heterogeneous pores, making it diffi cult to optimize their mass-transfer properties.A honeycomb-patterned polymer fi lm prepared by casting polymer solution under humid conditions, followed by solvent evaporation, holds promise for a wide variety of applications, including as superhydrophobic surfaces, [ 13,14 ] a template composed of microlens arrays, [ 15,16 ] porous electrodes, [ 17 ] and other practical applications. [18][19][20][21] These applications utilize the uniformly sized and hexagonally arranged pores of the fi lms. These pores are generated by evaporative cooling, which leads to water droplets condensing onto the surface of the polymer solution during solvent evaporation. The condensed water droplets act as templates to form porous fi lms with hexagonally arranged pores following complete evaporation fi rst of the solvent, then of the template water droplets. [ 22,23 ] This "breath fi gure" technique allows the formation of unique 3D structured, laterally connected pores that refl ect the shape of the template water droplets.Porous polymer materials prepared from biodegradable polymers have received considerable attention due to their potential as cell culture scaffolds for tissue engineering. Porous materials are generally sterilized by autoclaving prior to use as cell culture scaffolds to avoid unexpected biological infection. However, the melting point of biodegradable polymers is typically lower than the temperature used in autoclave sterilization. Here, the preparation of honeycomb fi lms comprising a poly(L-lactic acid) (PLLA) and poly(D-lactic acid) (PDLA) stereo complex is described and their thermal stabilities are evaluated. The hierarchic photochemical patterning of PLLA/PDLA stereo complex honeycomb-patterned fi lms by UV-O 3 treatment is also demonstrated.

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“…Treating the surface of polystyrene honeycomb films with UV-ozone decreased the water contact angle with increasing treatment time, and the film surface eventually became easy to wet with water because of the oxidation of the surface hydrocarbons. After this treatment, the holes in the film could be filled with an aqueous dispersion of particles [105].…”

Section: Surface Modificationmentioning

confidence: 99%

Fabrication of honeycomb films by the breath figure technique and their applications

Yabu

2018

Science and Technology of Advanced Materials

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The breath figure method, which is used to form porous films from water droplet templates, has attracted considerable interest because it is simple and applicable to a wide variety of materials. Research on breath figures took off after the 2000s, accompanied by new polymer synthesis methods, fabrication methods, and a wide variety of applications. There are several comprehensive reviews of the applications of the porous films, which are usually called 'honeycomb films' because their hexagonally packed porous structure resembles honeycombs. However, new materials, progress in preparation technologies for controlling nanoand microstructures, and large-area fabrication are still areas that require further research. Furthermore, new applications of honeycomb films have emerged. In this review, the recent development of honeycomb films prepared by the breath figure techniques and their numerous applications are summarized. The production of honeycomb films can be performed on an industrial scale, greatly broadening their possible applications in areas such as optics, photonics, surface science, biotechnology, and regenerative medicine. Present problems and future perspectives are also discussed.

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Multiple-periodic structures of self-organized honeycomb-patterned films and polymer nanoparticles hybrids

Cited by 31 publications

References 24 publications

Preparation and Functions of Hybrid Membranes with Rings of Ag NPs Anchored at the Edges of Highly Ordered Honeycomb‐Patterned Pores

Preparation and Functions of Hybrid Membranes with Rings of Ag NPs Anchored at the Edges of Highly Ordered Honeycomb‐Patterned Pores

Thermally Stable Honeycomb‐Patterned Porous Films of a Poly(L‐lactic acid) and Poly(D‐lactic acid) Stereo Complex Prepared Using the Breath Figure Technique

Fabrication of honeycomb films by the breath figure technique and their applications

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