Fabrication of Aromatic-Aliphatic Aminoketone Polymers with Terminal Fluorine Groups
✍ Scribed by Susann Anders; Wolfgang Schrepp; Lysann Kaßner; Andreas Pohlers; Walter Hoyer; Stefan Spange
- Book ID
- 102483130
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 460 KB
- Volume
- 211
- Category
- Article
- ISSN
- 1022-1352
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A procedure for synthesis aromatic‐aliphatic PAK, completely functionalized with __p‐__fluorophenyl terminal groups, is presented. This synthesis uses the nucleophilic aromatic substitution of DFB with various secondary aliphatic diamines [CH~3~NH(CH~2~)~m~NHCH~3~] (m = 3, 6, and 8) and cesium fluoride as the base catalyst in the melt. The linearity and the complete functionalization of the PAK compounds with __p‐__fluorophenyl terminal groups are demonstrated with the aid of MALDI TOF mass spectrometry. PAK compounds are semi‐crystalline as shown by WAXS and DSC measurements. The degree of crystallinity ranges between 2 and 25%. Nucleophilic aromatic substitution reactions in the fluorine end groups are demonstrated by reaction of PAK (m = 6) with the strong __S‐__nucleophile mercaptoacetic acid.
magnified image