Analysis of soft and hard nanoparticle alternating multilayers for the development of theory for long-period stacking order structure prepared by Langmuir-Blodgett method

Machida, Hiroki; Kikuchi, Nanata; Ohashi, Takato; Fujimori, Atsuhiro

doi:10.1016/j.tsf.2020.138235

Cited by 12 publications

(4 citation statements)

References 44 publications

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“…The former showed 74% crystallinity, with a D 001 microcrystal size of 187 Å, while the latter exhibited 68% crystallinity with a D 001 microcrystal size of 132 Å. Similar to the multiparticle layers on the glass substrate in previous studies, , the same degree of regularity was ensured between the layered single-particle film and the Nano-mille-feuille. Therefore, it has been proven that an orderly multiparticle film can be produced because this method of the layered single-particle film is regardless of organic/inorganic constituents.…”

Section: Resultssupporting

confidence: 75%

“…In addition, on the side with many layers, the maintenance of order in 40 layers, which is double the amount, is evaluated. Furthermore, it has already reported the regularity maintaining shown in the previous papers , when the periodicity of alternating layering is changed.…”

Section: Materials and Methodssupporting

confidence: 63%

“…In recent years, organic/inorganic layered nanohybrids known as “Nano-mille-feuilles” with high regularity have been produced , (Figure , lower) by alternately layering a polymer nanosphere monolayer (a polymer fine particle film) and an organo-modified inorganic nanoparticle monolayer . These multinanoparticle layers were created by spreading them at the air/water interface using the Langmuir monolayer and Langmuir–Blodgett (LB) films. − In these materials, precise structural evaluation was performed using paracrystal analysis, which utilizes thin-film X-ray diffraction (XRD).…”

Section: Introductionmentioning

confidence: 99%

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Regularity Maintenance Properties under Deformation of Kink-Introduced Nano-Mille-Feuille Structures Derived from Interfacial Friction

2021

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The regularity-maintaining properties under the deformation of a kinkintroduced "Nano-mille-feuille" structure were verified, which might contribute to the development of high-strength, lightweight materials, and evidence of its usefulness was obtained. Simultaneously, a technique for evaluating the mechanical resistance of a highly ordered Nano-mille-feuille structure obtained by alternately layering individual particle films composed of polymer nanospheres and organo-modified inorganic nanoparticles with a common particle diameter of 5 nm was proposed. The Nano-millefeuille was prepared on a flexible resin substrate that was subjected to uniaxial drawing deformation using a manual drawing machine to monitor changes in the layered regularity of multiparticle layers on its surface. Furthermore, the same estimation as the kink-introduced Nano-mille-feuille, which was created on an underlayer introducing advance nanometer-sized steps on one-half of the substrate, was made and compared to the regularity-maintaining properties of the Nano-mille-feuille. The presence of kink-like nanosteps demonstrated the effect of enhancing the deformation resistance of the layered regularity of the multiparticle layers. It was confirmed that the presence of kinks maintains the layering regularity of nanoparticles even under drawing deformation at a higher magnification. The presence of nanokinks is expected to enhance the interfacial friction of the particle layers and has shown the possibility of structural/functional correlation that can impart high-strength properties to materials derived from light elements and/or lightweight metals in future.

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Section: Resultssupporting

confidence: 75%

Section: Materials and Methodssupporting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

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Regularity Maintenance Properties under Deformation of Kink-Introduced Nano-Mille-Feuille Structures Derived from Interfacial Friction

2021

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“…[19] It also plays a role in the pigment and has a concealing effect on spots and freckles on the skin. [20] In recent years, many studies have reported that nanoparticles modified with long-chain fatty acids form a homogeneous single-particle layer at the air/water interface [21][22][23][24][25][26] (Figure 1(b)). We could not find any previous report on the behavior of multi-layered films of organically modified inorganic nanoparticles to produce structural colors.…”

Section: Introductionmentioning

confidence: 99%

Appearance of Structural Color by Constructing Highly Regular Single‐Particle Layers on a Water Surface of Organo‐Modified Magnetite with Different Particle Diameter

Kikuchi,

Yamagishi,

Fujimori

2023

ChemistrySelect

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Using triiron tetroxide/magnetite particles with particle diameters of 5 nm and 30 nm, the structural color occurrence behavior due to multi‐particle layer formation was compared. The −OH‐terminated groups on the surface of the outermost layer of magnetite were bound with long‐chain fatty acids to obtain amphiphilic organo‐modified magnetite. Organo‐modified magnetite was spread as a single‐particle layer on the water surface and layered in multiple layers on a solid substrate. Organo‐modified magnetite multilayers layered to a thickness close to the wavelength of visible light exhibited a clear structural color, regardless of the particle size. However, in the case of fine particles with a diameter of 5 nm, the structural color did not appear when the in‐plane packing density was low, and the density of the two‐dimensional plane played an important role. In comparison, in the same production process and particle type, a clearer structural color was expressed with a diameter of 30 nm, and individual differences in physical properties were also confirmed when other nanoparticle types were used.

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Characterization of Langmuir Monolayers for Nanodiamonds Surface‐Modified with 12‐Hydroxystearyl Chains and the Occurrence of Structural Colors

Yamagishi,

Sakamoto,

Hasunuma

et al. 2024

ChemistrySelect

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The surfaces of nanodiamond particles are modified using natural castor oil‐derived 12‐hydroxystearic acid, which has thixotropic solvent properties. 12‐Hydroxystearyl chain‐modified nanodiamonds (12OHSt‐ND) are spread from a dispersion medium onto ultrapure water to afford Langmuir monolayers (a single‐particle layer) of 12OHSt‐ND exhibited a two‐dimensional phase transition from an expanded phase to a condensed phase. The surface morphology of the single‐particle layer shows a dispersed form of aggregated particles, while the layered regularity of the multilayers shows high periodicity. The surface hydrophobicity of the single‐particle layer of 12OHSt‐ND is more pronounced than that of the single‐particle layer of stearic acid‐modified nanodiamonds. The origin of the surface hydrophobicity of the single‐particle layer of 12OHSt‐ND is predicted to be the vertical conformation of the modified chains achieved via hydrogen bonding between the modified chains. In addition, the stepwise multilayers of 12OHSt‐ND exhibit various structural colors depending on the number of layers.

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Analysis of soft and hard nanoparticle alternating multilayers for the development of theory for long-period stacking order structure prepared by Langmuir-Blodgett method

Cited by 12 publications

References 44 publications

Regularity Maintenance Properties under Deformation of Kink-Introduced Nano-Mille-Feuille Structures Derived from Interfacial Friction

Regularity Maintenance Properties under Deformation of Kink-Introduced Nano-Mille-Feuille Structures Derived from Interfacial Friction

Appearance of Structural Color by Constructing Highly Regular Single‐Particle Layers on a Water Surface of Organo‐Modified Magnetite with Different Particle Diameter

Characterization of Langmuir Monolayers for Nanodiamonds Surface‐Modified with 12‐Hydroxystearyl Chains and the Occurrence of Structural Colors

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