Synthesis and Properties of Soluble Aromatic Polymers Containing Noncoplanar Rigid-rod Structures

• Main Authors: yi-kai, Fang, 方佾凱
• Other Authors: Guey-Sheng, Liou
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/76340556271481298359

碩士 === 國立暨南國際大學 === 應用化學系 === 94 === 2,2’-Diiodobiphenyl-4,4’-dicarboxylic acid dimethyl ester will be prepared by the reaction of iodine with 4,4’-biphenyldicarboxylic acid dimethyl ester. Then, via Suzuki reaction of the obtained diiodine intermediates with 1-naphthaleneboronic acid and benzeneboronic acid, followed by acidification and hydrolysis yield the novel 2,2’-diphenyl and 2,2’-di(1-naphthyl)-4,4’-biphenyldicarboxylic acids. This study has been separated into two parts. Part I to II include three series of novel aromatic polyhydrazides, poly(1,3,4-oxadiazole)s and polyamides based on 2,2’-diphenylbiphenyl-4,4’-dicarboxylic acid and 2,2’-di(1-naphthyl)biphenyl-4,4’-dicarboxylic acid. The synthesis, basic characterization, electrochemical and optical properties of three series of novel aromatic polymer side chain phenyl or naphthyl-substituents groups were investigated and compared. All polymers had good solubility in many polar aprotic solvents, and exhibited excellent thin-film-forming ability. In additiony to high Tg values, good thermal stability and proper LUMO energy levels, all the obtained polymers also exhibited excellent blue-emitting characteristics by the optical methods. Thus, these phenyl or naphthyl-substituents polymers may be widely applied in P-LED as electro-transporting material in display devices due to their excellent high efficient blue light, proper LUMO values and thermal stability.