2017年3月13日上午10:30 Prof. Toshihiko Matsumoto学术报告

报告主题:Colorless and Thermally Stable Polymer for Substrate of Optoelectronic Device-Alicyclic Polyimides

报告人:Prof. Toshihiko Matsumoto (Tokyo Polytechnic University)

主持人:张 艺 教授

时间:2017年3月13日上午10:30

地点:丰盛堂芙兰学术交流中心A403

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报告摘要:

An alicyclic dianhydride having cyclopentanone bis-spironorbornane structure (CpODA) was polycondensated with aromatic diamines at room temperature in various kinds of polar solvents to give poly(amic acid)s having an inherent viscosity (hinh) range of 1.47-0.54 dL/g.  The poly(amic acid)s were imidized by three methods.  The imidization ratio of PI(CpODA+3,4’-DDE) reached 100% at 200 oC using a combined chemical and thermal imidization method. A novel technique “precipitation chemical imidization method” can be applicable to some polyimides which were precipitated in the imidizatition medium but soluble in chloroform. The homogeneous chloroform solutions gave highly transparent polyimide films only by drying at 80 oC under vacuum. All the polyimide films possessed excellent thermal stability and Tg over 330 oC. The CTE value of thermally imidized PI(CpODA+4,4’-DABA) was as low as 17 ppm/K.  The polyimide films exhibited lcut-off shorter than 336 nm, and the Tvis value of each polyimide film was over 85%.  Especially, PI(CpODA+3,4’-DDE) prepared by a combined method and a precipitation chemical imidization methods had outstanding optical properties (Tvis: >88 %, lcut-off: 278 nm) due to the low temperature film-fabrication. These colorless polyimide films may be a promising candidate for the substrate of flexible optoelectronic devices.

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报告人简介:

CURRICULUM VITAE

 

 

Toshihiko Matsumoto

Professor, Ph. D

Department of Life Sci. & Sustainable Chem.

Tokyo Polytechnic University

1583 Iiyama, Atsugi

Kanagawa 243-0297, Japan

Tel: +81-46-242-9527

Fax: +81-46-242-3000

E-mail: matumoto@chem.t-kougei.ac.jp

 

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Toshihiko Matsumoto was born in 1952.  He obtained his Ph.D. degree in polymer chemistry from the University of Tokyo.  He served as a postdoctoral fellow at RIKEN (The Institute of Physical and Chemical Research, Japan).  In 1985 he was appointed Assistant Professor at Tokyo Institute of Polytechnics (renamed Tokyo Polytechnic University).  In 2003 he was promoted to full Professor of Polymer Chemistry.  He took office as the Director of Center for Nano Science & Technology at the University in 2006 (- the present), and now he is also the Chair of Department of Industrial Chemistry (Graduate School of Engineering). He also gives an intensive course lecture (series of lectures) at the Graduate School of Tokyo Institute of Technology (Tokyo Tech.).  He has been a reviewer for 12 journals including Polymer, Macromolecules, Journal of Polymer Science: Part A, and Polymer International. Recently he has been awarded Recognized Reviewer Status by Elsevier.  He has delivered many invited lectures at national and international meetings, and academic institutions. He has published more than 100 scientific papers in primary journals together with 30 reviews & books, and 35 patents.

 

 



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