Mari Ishihara

Hyogo Prefectural Institute of Technology

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Mechanical properties of poly (ethylene terephthalate)/hydrogenated styrene-isoprene block copolymer composites.

NIPPON GOMU KYOKAISHI (1993)

Asahiro Nagatani Mari Ishihara Masaru Mori Jojiro Okumura Koichi Yamaguchi

水素添加スチレン-イソプレンブロック共重合体(SEPS)に繊維長3～10mmのポリエチレンテレフタレート(PET)短繊維を充てんし, 繊維を一軸方向に配向させた短繊維／SEPS複合体を作製した.複合体の引張物性への混練温度の影響はほとんど認められなかったが, 混練温度が低いほどSEPS中へのPET短繊維の分散が良好となった. ロール列理方向では, PET短繊維の充てん量が増加するとともに引張強さおよび引張応力が増大した. 未処理のPET短繊維を用いた場合, 繊維長が異なっても複合体の引張物性はほとんど変化しなかった. 酸変性水素添加スチレン-イソプレンジブロック共重合体で表面処理を施したPET短繊維を用いると, 5mmまでは繊維長が長いほうがロール列理方向における引張強さは大きくなり, 繊維長が5mmのものでは未処理のものに比べて引張強さは約40%増大した. 複合体の貯蔵弾性率はPET短繊維を充てんすることによってSEPSよりも高くなった.

Isoprene

Poly ethylene

10.2324/gomu.66.741

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Citations (1)

Library Collection of Yokohama American Cultural Center and the Purpose behind its Foundation

Mari Ishihara

Center (category theory)

Foundation (evidence)

Source

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Citations (2)

Pronounced Effect of the Methods of Preparation of Organic Thin Films on Hole Injection from the Indium-tin-oxide Electrode–Vacuum Deposition vs Spin Coating

Chemistry Letters (2003)

Mari Ishihara Kenji Okumoto Yasuhiko Shirota

Abstract The methods of preparation of organic thin films of hole-transporting materials, vacuum deposition and spin coating, were found to exert a pronounced influence on charge injection from electrodes into organic layers in organic electroluminescent devices, depending upon the kind of hole transporters.

Indium tin oxide

Deposition

Spin Coating

10.1246/cl.2003.162

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Citations (9)

Fabrication and optical properties of photochromic compound/clay hybrid films

Thin Solid Films (2009)

Kenji Kinashi Hiroyuki Kita Masahiro Misaki Yasuko Koshiba Kenji Ishida

Saponite

Cationic polymerization

Cation-exchange capacity

Hybrid material

10.1016/j.tsf.2009.07.042

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Citations (15)

Photoinduced spectral changes in hybrid thin films of functional dyes and inorganic layered material

Thin Solid Films (2009)

Mari Ishihara Ryuji Hirase Masaru Mori Hideki Yoshioka Yasukiyo Ueda

Cyanine

Diarylethene

Visible spectrum

J-aggregate

Hybrid material

10.1016/j.tsf.2009.07.103

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Citations (5)

Electrically Conducting Amorphous Molecular Material: Iodine Doped m-MTDATA as a Hole Injection Buffer Layer in Organic Electroluminescent Devices

Molecular Crystals and Liquid Crystals (2006)

Mari Ishihara Kenji Okumoto Toshimitsu Tsuzuki Hiroshi Kageyama Hideyuki Nakano

An electrically conducting amorphous molecular material was prepared by iodine doping of 4,4′,4″-tris[3-methylphenyl(phenyl)amino]triphenylamine (m-MTDATA). The use of iodine-doped m-MTDATA, which was identified as m-MTDATA radical cation species with counter anions, as a hole-injection buffer layer in tris(8-quinolinolato)aluminum (Alq3)-based organic electroluminescent devices led to the reduction of drive voltage and the enhancement of external quantum efficiency as compared with the corresponding device using undoped m-MTDATA. It is indicated that the use of iodine-doped m-MTDATA facilitates not only hole injection from the ITO electrode but also electron injection from the cathode into Alq3.

Triphenylamine

10.1080/15421400600698667

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Citations (4)

Electrically conducting amorphous molecular materials: preparation and electrical conductivities of chemically doped 2,5-bis{4-[bis(4-methylphenyl)amino]phenyl}thiophene and 5,5′-bis{4-[bis(4-methylphenyl)amino]phenyl}-2,2′-bithiophene

Synthetic Metals (2001)

Mari Ishihara Tetsuya Noda Hiroshi Kageyama Hideyuki Nakano Yasuhiko Shirota

10.1016/s0379-6779(00)00986-3

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Citations (7)

Preparation of a Merocyanine J-Aggregate via Block Copolymer-Hybridized Self-Assembly

Mari Ishihara

Merocyanine

J-aggregate

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Citations (0)

The Effect of Annealing of Organic Thin Films on Charge Injection in Organic Electroluminescent Devices.

Journal of Photopolymer Science and Technology (2002)

Mari Ishihara Kenji Okumoto Yasuhiko Shirota

The effect of annealing of organic thin films on charge injection in the tris(8-quinolinolato)aluminium (Alq3)-based organic electroluminescent (EL) devices was investigated. The external quantum and luminous efficiencies were found to improve by annealing. The investigation of the effect of annealing on charge injection in hole-only and electron-only devices has revealed that while hole injection from the ITO electrode into the hole-transport layer is not affected by the annealing, electron injection from the MgAg electrode into the Alq3 layer is enhanced by the annealing. It is concluded that improved charge balance due to the enhanced electron injection by the annealing is responsible for the improvement of the performance of the organic EL device.

Organic semiconductor

10.2494/photopolymer.15.769

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Citations (2)

Mechanical properties of poly (ethylene terephthalate)/hydrogenated styrene-isoprene block copolymer composites.:ISOPRENE BLOCK COPOLYMER COMPOSITES

GOMU (1993)

Asahiro Nagatani Mari Ishihara Masaru Mori Jojiro Okumura Koichi Yamaguchi

Isoprene

Source

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Citations (0)