Paper Abstract and Keywords |
Presentation |
2023-01-27 15:05
Colorless, Low-Dielectric, Optically Active Semi-Aliphatic Polyimide with Plant-Derived Isosorbide Backbone Ririka Sawada, Ryohei Ishige, Shinji Ando (Tokyo Tech) OME2022-77 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Seven kinds of polyimides (PIs) incorporating an optically active bio-derived isosorbide (ISS) skeleton in the main chain (ISS-PIs) were prepared using a tetracarboxylic dianhydride derived from ISS and trimellitic anhydride. ISS-PIs showed excellent optical transparency, low refractive index, low dielectric constant, and small birefringence compared to conventional fully aromatic PIs. This may be attributed to the reduction of intermolecular interactions due to the bulky alicyclic ISS structure and the bent and flexible PI main chains, which suppressed in-plane orientation of the main chains and dense molecular packing between the PI chains. ISS-PI with excellent optical properties exhibits low dielectric constant (Dk) and moderate dissipation factor (Df) at 10-20 GHz, and ISS-PI and its model compounds show clear circular dichroism in the UV region both in solution and in the solid state due to the intrinsic optical activity of the ISS, and the chiral structure is maintained in solid PI films. Furthermore, ISS-PI has sufficient thermal stability, with glass transition temperatures (Tg) of about 260°C and 5 wt% weight loss temperatures (Td5) of about 400°C. The present study clarified the relationships among the excellent optical, dielectric, thermal properties, and the stereochemical structure, and the aggregation state of ISS-PI. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Polyimide / Isosorbide / Optically active / High transparency / Low refractive index / Low dielectric constant / / |
Reference Info. |
IEICE Tech. Rep., vol. 122, no. 369, OME2022-77, pp. 14-17, Jan. 2023. |
Paper # |
OME2022-77 |
Date of Issue |
2023-01-20 (OME) |
ISSN |
Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
Download PDF |
OME2022-77 |
Conference Information |
Committee |
OME |
Conference Date |
2023-01-27 - 2023-01-28 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Kochi Shoko Kaikan |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
biotechnology, medical engineering, interfacial phenomena and reaction |
Paper Information |
Registration To |
OME |
Conference Code |
2023-01-OME |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Colorless, Low-Dielectric, Optically Active Semi-Aliphatic Polyimide with Plant-Derived Isosorbide Backbone |
Sub Title (in English) |
|
Keyword(1) |
Polyimide |
Keyword(2) |
Isosorbide |
Keyword(3) |
Optically active |
Keyword(4) |
High transparency |
Keyword(5) |
Low refractive index |
Keyword(6) |
Low dielectric constant |
Keyword(7) |
|
Keyword(8) |
|
1st Author's Name |
Ririka Sawada |
1st Author's Affiliation |
Tokyo Institute of Technology (Tokyo Tech) |
2nd Author's Name |
Ryohei Ishige |
2nd Author's Affiliation |
Tokyo Institute of Technology (Tokyo Tech) |
3rd Author's Name |
Shinji Ando |
3rd Author's Affiliation |
Tokyo Institute of Technology (Tokyo Tech) |
4th Author's Name |
|
4th Author's Affiliation |
() |
5th Author's Name |
|
5th Author's Affiliation |
() |
6th Author's Name |
|
6th Author's Affiliation |
() |
7th Author's Name |
|
7th Author's Affiliation |
() |
8th Author's Name |
|
8th Author's Affiliation |
() |
9th Author's Name |
|
9th Author's Affiliation |
() |
10th Author's Name |
|
10th Author's Affiliation |
() |
11th Author's Name |
|
11th Author's Affiliation |
() |
12th Author's Name |
|
12th Author's Affiliation |
() |
13th Author's Name |
|
13th Author's Affiliation |
() |
14th Author's Name |
|
14th Author's Affiliation |
() |
15th Author's Name |
|
15th Author's Affiliation |
() |
16th Author's Name |
|
16th Author's Affiliation |
() |
17th Author's Name |
|
17th Author's Affiliation |
() |
18th Author's Name |
|
18th Author's Affiliation |
() |
19th Author's Name |
|
19th Author's Affiliation |
() |
20th Author's Name |
|
20th Author's Affiliation |
() |
Speaker |
Author-1 |
Date Time |
2023-01-27 15:05:00 |
Presentation Time |
35 minutes |
Registration for |
OME |
Paper # |
OME2022-77 |
Volume (vol) |
vol.122 |
Number (no) |
no.369 |
Page |
pp.14-17 |
#Pages |
4 |
Date of Issue |
2023-01-20 (OME) |
|