Alicyclic Polyimides Derived from Polyalicyclic Dianhydride and Aromatic Diamine
Polyimides are classified into four distinct categories according to their chemical structures, aromatic polyimides, two types of semi-aromatic polyimides, and non-aromatic (fully aliphatic) polyimides. Most of aromatic polyimides are insoluble in common organic solvents, and intensely absorb visible light and colored reddish yellow or pale yellow. The origin of the colorlation is known to be caused by intra-and/or inter-molecular charge transfer. We have achieved the synthesis of soluble and colorless polyimides using polyalicyclic dianhydrides and aromatic diamines. Soluble, colorless and high-temperature polymers like alicyclic polyimides have much attention in recent years because of their potential applications including use as liquid crystal orientation layers, flexible organic ELD or solar-cell substrates. In the presentation, we will report the synthesis and the properties of the alicyclic polvimides as well as a synthetic method of dianhydrides.
polyimides alicyclic cycloaliphatic polyalicyclic thermally stable colorless soluble
Takahiro HASHIMOTO Motoaki KAISE Toshihiko MATSUMOTO
Center for Nano Sci & Technol,Tokyo Polytechnic Univ,Atsugi,Japan
国际会议
5th East-Asian Polymer Conference(第5届东亚高分子学术研讨会)
上海
英文
236-237
2008-06-03（万方平台首次上网日期，不代表论文的发表时间）