Shu-Hua Cheng, S. Hsiao, T. Su
2005
Citations
2
Influential Citations
234
Citations
Quality indicators
Journal
Macromolecules
Abstract
A new triphenylamine-containing aromatic diamine, N,N-bis(4-aminophenyl)-N‘,N‘-diphenyl-1,4-phenylenediamine, was synthesized from the amination reaction between 4-aminotriphenylamine and 4-fluoronitrobenzene and subsequent reduction of the dinitro intermediate. A series of novel aromatic poly(amine-imide)s with pendent triphenylamine units were prepared from the newly synthesized diamine and various tetracarboxylic dianhydrides by either a one-step or a conventional two-step polymerization process. All the poly(amine-imide)s were amorphous and readily soluble in many organic solvents such as N-methyl-2-pyrrolidone (NMP), N,N-dimethylacetamide, and chloroform. These polymers could be solution cast into transparent, tough, and flexible films with good mechanical properties. They had useful levels of thermal stability associated with relatively high glass transition temperatures (264−352 °C), 10% weight-loss temperatures in excess of 568 °C, and char yields at 800 °C in nitrogen higher than 63%. These polym...