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Nam-Ho You

Tokyo Institute of Technology

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Publication

Featured researches published by Nam-Ho You.

Polymer Chemistry | 2010

Synthesis of sulfur-containing poly(thioester)s with high refractive indices and high Abbe numbers

Nam-Ho You; Tomoya Higashihara; Suzuki Yasuo; Shinji Ando; Mitsuru Ueda

New poly(thioester)s (PTE)s containing sulfide and alicyclic units in polymer chains with high refractive indices and high Abbe numbers have been developed as thermoplastics. The PTEs were synthesized by the polycondensation reaction of 2,5-bis(sulfanylmethyl)-1,4-dithiane (BMMD) with 1,3-adamantanedicarbonyl dichloride (ADC) or cyclohexanedicarbonyl dichloride (CDC). Tough, flexible, and transparent amorphous polymer films were obtained. All polymers showed good thermal stability such as 5% weight-loss temperatures in the range 301–307 °C under nitrogen, and glass transition temperatures (Tg) in the range 65–110 °C. Poly(BMMD/ADC) and poly(BMMD/CDC) showed high refractive indices of 1.6149 and 1.6217, Abbe numbers of 32.1 and 30.0, respectively, and high transparency in the visible region.

Macromolecules | 2009

Synthesis and Memory Device Characteristics of New Sulfur Donor Containing Polyimides

Nam-Ho You; Chu-Chen Chueh; Cheng-Liang Liu; Mitsuru Ueda; Wen-Chang Chen

Macromolecules | 2008

Synthesis of High Refractive Index Polyimides Derived from 1,6-Bis(p-aminophenylsulfanyl)-3,4,8,9-tetrahydro-2,5,7,10-tetrathiaanthracene and Aromatic Dianhydrides

Nam-Ho You; Yasuo Suzuki; Daisuke Yorifuji; Shinji Ando; Mitsuru Ueda

Macromolecules | 2012

Thiophene and Selenophene Donor–Acceptor Polyimides as Polymer Electrets for Nonvolatile Transistor Memory Devices

Ying-Hsuan Chou; Nam-Ho You; Tadanori Kurosawa; Wen-Ya Lee; Tomoya Higashihara; Mitsuru Ueda; Wen-Chang Chen

Journal of Polymer Science Part A | 2009

Synthesis of high‐refractive index polyimide containing selenophene unit

Nam-Ho You; Namiko Fukuzaki; Yasuo Suzuki; Yasuhiro Nakamura; Tomoya Higashihara; Shinji Ando; Mitsuru Ueda

Journal of Polymer Science Part A | 2009

Synthesis of highly refractive polyimides derived from 3,6-bis(4-aminophenylenesulfanyl)pyridazine and 4,6-bis(4-aminophenylenesulfanyl)pyrimidine

Nam-Ho You; Yasuhiro Nakamura; Yasuo Suzuki; Tomoya Higashihara; Shinji Ando; Mitsuru Ueda

Macromolecules | 2010

Highly Refractive Poly(phenylene thioether) Containing Triazine Unit

Nam-Ho You; Tomoya Higashihara; Yoshiyuki Oishi; Shinji Ando; Mitsuru Ueda

Polymer | 2009

Synthesis and characterization of highly refractive polyimides derived from 2,7-bis(4′-aminophenylenesulfanyl)thianthrene-5,5,10,10-tetraoxide and aromatic dianhydrides

Nam-Ho You; Yasuo Suzuki; Tomoya Higashihara; Shiji Ando; Mitsuru Ueda

Journal of Polymer Science Part A | 2010

Synthesis of highly refractive and transparent polyimides derived from 4,4′-thiobis[2″,6″-dimethyl-4″-(p-phenylenesulfanyl)aniline]

Nam-Ho You; Tomoya Higashihara; Shinji Ando; Mitsuru Ueda

Journal of Polymer Science Part A | 2010

Highly refractive polymer resin derived from sulfur‐containing aromatic acrylate

Nam-Ho You; Tomoya Higashihara; Shinji Ando; Mitsuru Ueda

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Mitsuru Ueda

Tokyo Institute of Technology

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Tomoya Higashihara

Yamagata University

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Shinji Ando

Tokyo Institute of Technology

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Yasuo Suzuki

Tokyo Institute of Technology

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Yasuhiro Nakamura

Tokyo Institute of Technology

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Wen-Chang Chen

National Taiwan University

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Daisuke Yorifuji

Tokyo Institute of Technology

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Namiko Fukuzaki

Tokyo Institute of Technology

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Shiji Ando

Tokyo Institute of Technology

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Shinzi Ando

Tokyo Institute of Technology

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