研究领域

Structures and Physical Properties of Solid State Polymeric Materials

The major target of our lab is "To develop novel functional polymers by controlling the three dimensional and electronic structures of aromatic polymers and fluoropolymers". In aromatic polymers, many substances are known to exhibit interesting thermal, electronic, and optical properties, and they form a major group of high performance polymers. In particular, fluorine-containing polyimides and highly fluorescent polyimides are attractive materials which possess high optical functionalities and high thermal stability. At present, we are investigating the structure-property relationships of aromatic polymers (polyimides) and fluoropolymers (vinylidene-fluoride copolymers and their inclusion compounds) in the solid state (films, nanofibers), and developing novel functional polyimides. Our present studies are as follows. To visit our lab is always welcome. Research Topics : Precise measurements of physical properties (refractive index, birefringence, photo-absorption, and fluorescent emission, thermal conductivity) and functionalization of aromatic polymers. Investigation and development of novel optically functional polymers (e.g. high fluorescent material etc.) by changing the electronic states, conformation, orientation, and molecular packing caused by substituent effects. Molecular design of transparent and colorless polymers that shows high fluorescent emission in the visible long wavelength region (Wavelength : 600-800 nm). Development of solid state nuclear magnetic resonance (NMR) spectroscopy methods applicable to fluoropolymer and aromatic polymers. Structure analysis of fluoropolymer nanofibers using high speed magic-angle-spinning 19F- and 13C-NMR. Development of thermally stable optical material and highly heat-conductive material using inorganic/organic nano-hybrid materials. Fabrication of highly effective and wide angle light scattering films and fluorescence scattering films using polyimide nano-fibers. Prediction of the optical properties of fluorine- and sulfur-containing polymers from vacuum-uv to far-infrared wavelength regions by quantum chemical (Density functional theory) calculations. Message from the LaboratoryThe motto of our group is Do Differently！ We hope to turn out best material scientists/engineers with high productivity and self-confidence through the prominent researches on functional polymer materials.

近期论文

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Kenta KANOSUE, Takamichi SHIMOSAKA, Junji WAKITA, and Shinji ANDO. "Polyimide and Imide Compound Exhibiting Bright Red Fluorescence with Very Large Stokes Shifts via Excited-state Intramolecular Proton Transfer". Macromolecules, 48(6), 1777-1785 (2015). Ali JAVADI, Abbas SHOCKRAVI, Mehdi KOOHGARD, Ali MALEK, Fateme AHMADI, Shourkaei, Shinji ANDO. "Nitro-Substituted Polyamides: A New Class of Transparent And Highly Refractive Materials". Eur. Polym. J., 66, 328-341 (2015). Seong-Ku KIM, Xingyuan WANG, Shinji ANDO, Xiaogong WANG. "Highly Transparent Triethoxysilane-Terminated Copolyimide and Its SiO2 Composite with Enhanced Thermal Stability and Reduced Thermal Expansion". Eur. Polym. J., 64, 206-214 (2015). Ali JAVADI, Abbas SHOCKRAVI, Atefeh RAFIEIMANESH, Ali M. MALEK, and Shinji ANDO. "Synthesis and Structure-Property Relationships of Thiazole-Containing Poly(amide imide)s with High Refractive Indices and Low Birefringences". Polymer International, 63, in press (2014). Seongku KIM, Xingyuan WANG, Shinji ANDO, Xiaogong WANG. "Hybrid Ternary Composites of Hyperbranched and Linear Polyimides with SiO2: A Research for Low Dielectric Constant and Optimized Properties". RSC Advances, 4, 42737-42746 (2014). Yoshiharu TERUI, Shinji ANDO. "Polarization Dependence of Thermo-Optic Coefficients in Polyimide Films Originating from Chain Orientation and Residual Thermal Stress". J. Appl. Phys., 116(5), 53524-1-10 (2014). Seongku KIM, Xingyuan WANG, Shinji ANDO, Xiaogong WANG. "Low Dielectric and Thermally Stable Hybrid Ternary Composites of Hyperbranched and Linear Polyimides with SiO2". RSC Advances, 4(52), 27267-27276 (2014). Kazuhiro TAKIZAWA, Hiroshi FUKUDOME, Yukiko KOZAKI and Shinji ANDO. "Pressure-induced Changes in Crystalline Structures of Polyimides Analyzed by Wide-Angle X-ray Diffraction at High Pressures". Macromolecules, 47(12), 3951-3958 (2014). Yusuke INOUE, Yoshihito ISHIDA, Tomoya HIGASHIHARA, Atsushi KAMEYAMA, Shinji ANDO, Mitsuru UEDA. "Alkaline-developable and Positive-type Photosensitive Polyimide based on Fluorinated Poly(amic acid) from Diamine with High Hydrophobicity and Fluorinated Diazonaphtoquinone". J. Photopolym. Sci. Technol., 27(2), 211-217 (2014). Mizuka TANIMOTO, Shinji ANDO. "Effects of Orientational Relaxation of Polymer Chains Induced by Isotropic Particles on the Enhanced Thermal Conductivity of AlN-filled Polyimide Films". J. Photopolym. Sci. Technol., 27(2), 193-198 (2014). Tomoya MURAKAMI, Kazuaki EBISAWA, Kenji MIYAO, Shinji ANDO. "Enhanced Thermal Conductivity in Polyimide/Silver Particle Composite Films Based on Spontaneous Formation of　Thermal Conductive Paths". J. Photopolym. Sci. Technol., 27(2), 187-191 (2014). Mizuka TANIMOTO, Shinji ANDO. "Effects of Chain Rigidity/Flexibility of Polyimides on Morphological Structures and Thermal Diffusivity of hBN-filled Composites". Composites Sci. Technol., 99, 103-108 (2014). Hong GAO, Daisuke YORIFUJI, Zhen-Hua JIANG, Shinji ANDO. "Thermal and Optical Properties of Hyperbranched Fluorinated Polyimide/Mesoporous SiO2 Nanocomposites Exhibiting High Transparency and Reduced Thermo-Optical Coefficients". Polymer, 55(12), 2848-2855 (2014). Kazuhiro TAKIZAWA, Shigeo ASAI, Shinji ANDO. "Temperature Dependence of Electric Conduction in Polyimides having a Triphenylamine Structure in the Main Chain". Polymer Journal, 46(1), 201-206 (2014). Yusuke KOITO, Kazuhiko YAMADA, and Shinji ANDO. "Solid-State NMR and Wide-Angle X-ray Diffraction Study of Hydrofluoroether /beta-Cyclodextrin Inclusion Complex". J. Inclus. Phenom. Macrocycl. Chem., 76(1), 143-150 (2013). Kenji SEKIGUCHI, Kazuhiro TAKIZAWA, and Shinji ANDO. "Thermal Expansion Behavior of the Ordered Domain in Polyimide Films Investigated by Variable Temperature WAXD Measurements". J. Photopolym. Sci. Technol., 26(3), 327-332 (2013). Mizuka TANIMOTO, Toshitaka YAMAGATA, Kenji MIYATA, and Shinji ANDO. "Anisotropic Thermal Diffusivity of Hexagonal Boron Nitride-Filled Polyimide Films: Effects of Filler Particle Size, Aggregation, Orientation, and Polymer Chain Rigidity". ACS Appl. Mater. Interfaces, 5(10), 4374-4382 (2013).