Search Results - "Ishige, Ryohei"

Precise structural analysis of polymer materials using synchrotron X-ray scattering and spectroscopic methods by Ishige, Ryohei

“…Polymers can exist in many different conformations and exhibit a variety of unique and complicated hierarchical structures, which are dominated mainly by…”
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Quantitative analysis of stereoscopic molecular orientations in thermally reactive and heterogeneous noncrystalline thin films via variable-temperature infrared pMAIRS and GI-XRD by Ishige, Ryohei, Tanaka, Kazuyuki, Ando, Shinji

“…The quantitative estimation of stereoscopic molecular orientations in semicrystalline polymer thin films with characteristic heterogeneous structures is…”
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Mechanically Robust and Self-Healable Superlattice Nanocomposites by Self-Assembly of Single-Component "Sticky" Polymer-Grafted Nanoparticles by Williams, Gregory A., Ishige, Ryohei, Cromwell, Olivia R., Chung, Jaeyoon, Takahara, Atsushi, Guan, Zhibin

“…A simple, scalable synthesis of mechanically robust and self‐healable superlattice nanocomposites is achieved through self‐assembly of single‐component…”
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Precise Analysis of Thermal Volume Expansion of Crystal Lattice for Fully Aromatic Crystalline Polyimides by X‑ray Diffraction Method: Relationship between Molecular Structure and Linear/Volumetric Thermal Expansion by Ishige, Ryohei, Masuda, Toshiaki, Kozaki, Yukiko, Fujiwara, Eisuke, Okada, Tomohiro, Ando, Shinji

“…Coefficients of thermal linear and volumetric expansion (CTE, CVE) of crystal lattice for 13 fully aromatic crystalline polyimides (PIs) were evaluated from…”
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Effects of chain packing and structural isomerism on the anisotropic linear and volumetric thermal expansion behaviors of polyimide films by Okada, Tomohiro, Ishige, Ryohei, Ando, Shinji

“…Anisotropic linear and volumetric thermal expansion behaviors of four types of isomeric polyimides (PIs) were investigated based on thermal mechanical analyses…”
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Pressure-Induced Variations of Aggregation Structures in Colorless and Transparent Polyimide Films Analyzed by Optical Microscopy, UV–Vis Absorption, and Fluorescence Spectroscopy by Fujiwara, Eisuke, Fukudome, Hiroshi, Takizawa, Kazuhiro, Ishige, Ryohei, Ando, Shinji

“…Pressure-induced variations in the main chain and aggregation structures of colorless and transparent semialiphatic polyimide (PI) films were investigated by…”
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Analysis of spatial orientation distribution of highly oriented polyimide film using micro ATR-FTIR spectroscopic imaging method by Ishige, Ryohei, Song, Cai Li, Hara, Shohei, Ando, Shinji, Kazarian, Sergei G.

“…Molecular orientation of aromatic polyimides (PIs) and their precursor of poly(amic ester)s (PAE) in the biaxially oriented films were analyzed by polarized…”
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Ultrafast Spectroscopic Analysis of Pressure-Induced Variations of Excited-State Energy and Intramolecular Proton Transfer in Semi-Aliphatic Polyimide Films by Fujiwara, Eisuke, Orita, Ryoji, Vyšniauskas, Aurimas, Franckevičius, Marius, Ishige, Ryohei, Gulbinas, Vidmantas, Ando, Shinji

“…The relationship between the photoexcitation dynamics and the structures of semi-aliphatic polyimides (3H-PIs) was investigated using ultrafast fluorescent…”
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Application of Synchrotron Radiation X-ray Scattering and Spectroscopy to Soft Matter by Takahara, Atsushi, Higaki, Yuji, Hirai, Tomoyasu, Ishige, Ryohei

“…Light produced by synchrotron radiation (SR) is much brighter than that produced by conventional laboratory X-ray sources. The photon energy of SR X-ray ranges…”
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Deformation of Hierarchical Lamellar Structure Formed by a Liquid Crystalline Block Copolymer by Kuribayashi, Junpei, Ishige, Ryohei, Hayashi, Mikihiro, Tokita, Masatoshi

“…The deformation of a structure of alternating liquid crystal (LC)/viscous layers upon being stretched along the normal layer is investigated using highly…”
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In Situ Analysis of Chain Orientation Behavior in Thin Film Aromatic Polyimides by Variable Temperature pMAIRS during Thermal Imidization by Ishige, Ryohei, Tanaka, Kazuyuki, Ando, Shinji

“…A variable‐temperature p‐polarized multiple‐angle incidence resolution spectroscopy (VT pMAIRS) technique is developed that enables the in situ analysis of the…”
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Anisotropic Linear and Volumetric Thermal‐Expansion Behaviors of Self‐Standing Polyimide Films Analyzed by Thermomechanical Analysis (TMA) and Optical Interferometry by Ando, Shinji, Sekiguchi, Kenji, Mizoroki, Masashi, Okada, Tomohiro, Ishige, Ryohei

“…The relationships between the molecular structure, polymer chain orientation, β‐transition temperature, and the coefficients of in‐plane and out‐of‐plane…”
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Anisotropic photoconductivity of aromatic and semi-aliphatic polyimide films: Effects of charge transfer, molecular orientation, and polymer chain packing by Takemasa, Chiaki, Chino, Teppei, Ishige, Ryohei, Ando, Shinji

“…The anisotropic photoconductive properties of polyimide (PI) films prepared using seven types of dianhydrides and a diamine containing a diphenyl-benzidine…”
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Compression and Thermal Expansion Behaviors of Highly Crystalline Polyimide Particles Prepared from Poly(amic acid) and Monomer Salts by Fujiwara, Eisuke, Ishige, Ryohei, Cerrón-Infantes, Daniel Alonso, Taublaender, Michael Josef, Unterlass, Miriam M, Ando, Shinji

“…This study discusses the lattice deformation with an increase in the pressure or temperature of a rigid-rod aromatic polyimide (PI), poly­(p-phenylene…”
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Unified explanation for self-assembly of polymer-brush-modified nanoparticles in ionic liquids by Nakanishi, Yohei, Ishige, Ryohei, Ogawa, Hiroki, Huang, Yun, Sakakibara, Keita, Ohno, Kohji, Kanaya, Toshiji, Takenaka, Mikihito, Tsujii, Yoshinobu

“…We determined the higher-order structures of polymer-brush-modified nanoparticles (PSiPs) in ionic liquids and explained the self-assembled structures as…”
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Water modulates the lamellar structure and interlayer correlation of poly(perfluorooctyl acrylate) films: a specular and off-specular neutron scattering study by Yamamoto, Akihisa, Higaki, Yuji, Thoma, Judith, Kimmle, Esther, Ishige, Ryohei, Demé, Bruno, Takahara, Atsushi, Tanaka, Motomu

“…Comb-like polymers with pendant-like perfluorocarbon side chains self-assemble into smectic lamellae and have been extensively used as water-repellent,…”
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Spontaneous Chain Orientation of Aromatic Polyimides Evolved during Thermal Imidization from Shear-Oriented Glassy Liquid Crystalline Precursors by Tanaka, Kazuyuki, Ando, Shinji, Ishige, Ryohei

“…A series of poly­(amic ester)­s, PMm, based on pyromellitic acid derivatives with long n-alkylene side chains [−(CH2) m H], were synthesized to prepare…”
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Synthesis and Characterization of White-Light Luminescent End-Capped Polyimides Based on FRET and Excited State Intramolecular Proton Transfer by Tabuchi, Atsuko, Hayakawa, Teruaki, Kuwata, Shigeki, Ishige, Ryohei, Ando, Shinji

“…N-cyclohexylphthalimide-substituted trifluoroacetylamino (CF3CONH-) group (3TfAPI), which forms an intramolecular hydrogen bond, was synthesized, and it…”
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Effective Reduction of Volumetric Thermal Expansion of Aromatic Polyimide Films by Incorporating Interchain Crosslinking by Ando, Shinji, Harada, Mari, Okada, Tomohiro, Ishige, Ryohei

“…To develop a facile method for reducing the coefficient of volumetric thermal expansion (CVE) of polymer films, the thermal expansion behaviors of thermally…”
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White-Light Emission and Tunable Luminescence Colors of Polyimide Copolymers Based on FRET and Room-Temperature Phosphorescence by Nara, Mayuko, Orita, Ryoji, Ishige, Ryohei, Ando, Shinji

“…Thermally stable copolyimide (CoPI) films exhibiting high optical transparency and room-temperature phosphorescence (RTP) were prepared by copolymerizing…”
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