161114-LeadingSeminar108-Prof. Toshikazu Miyoshi

第 108 回
分子システム
九州大学大学院博士課程教育リーディングプログラム
分子システムデバイスコース
Advanced Graduate Course on Molecular Systems for Devices
デバイスセミナー
★
Open Seminar
日時：2016
参加費無料
Free Admission
年 11 月 14 日 (月) 13:00 ∼14:30
会場：ウエスト4号館3階 5番講義室（315)
West 4, 3F, Lecture Room 315
Elucidation of Chain Trajectory and Chemical
Reactions of Semicrystalline Polymers
by Solid-State NMR Spectroscopy
Abstract
Prof.
Toshikazu Miyoshi
Department of Polymer
Science, The University
of Akron, United States
Solid-state(ss)-NMR spectroscopy is one of very powerful tools to
characterize local structures and molecular dynamics of organic molecules. In
this talk, I will present two research topics of i) chain trajectory of
semicrystalline polymers and ii) chemical reactions of Polyacrylonitrile (PAN)
for carbon fiber. In both topics, there have been long-standing researches over
the half century. However, we still do not have clear conclusions in both issues
due to experimental limitations. To solve these problems, higher spectral and
spatial resolutions are definitively necessary. Recently, we developed 13C-13C
double quantum (DQ) NMR spectroscopy combined with 13C selective isotope
labeling to investigate detailed chain trajectory of semicrystalline polymers. I
will demonstrate how our technique accesses chain folding and unfolding of
semicrystalline polymers. On the basis of molecular level structure,
chain-folding mechanisms of long polymer chains will be discussed. Similar
idea came up to solve chemical reactions. I will demonstrate how ssNMR
approach distinguishes intramolecular reactions from intermolecular reactions
in the solid phase and quantitatively analyze their reaction kinetics.
■お問い合わせ先
田中敬二（工学研究院応用化学部門（機能））
E-mail : k-tanaka[at]cstf.kyushu-u.ac.jp
TEL : 092-802-2878
分子システムデバイス国際リーダー教育センター支援室
E-mail : oﬃce[at]molecular-device.kyushu-u.ac.jp
TEL : 092-802-2911 FAX : 092-802-2912
〒819-0395 福岡県福岡市西区元岡 744
九州大学伊都キャンパスウエスト 2 号館 627 号室
■ 主催：九州大学工学研究院応用化学部門田中研究室
共催：九州大学高分子機能創造リサーチコア
後援：九州大学大学院博士課程教育リーディングプログラム
分子システムデバイスコース
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