TY - JOUR
AU - Thrasher, Joseph S.
AB - Two new fluorine-containing diamine monomers were designed with the goal of reducing charge transfer complex (CTC) interactions between neighboring chains in polyimides (i.e., high transparency/low color) while hopefully maintaining the well-known thermal stability and flexibility generally associated with polyimides. The proposed diamines have been prepared through (1) the functionalization of 1,3-bis[(pentafluorobenzyl)oxy]benzene with 4-aminophenol and (2) the addition of 2-chloro-5-nitrobenzotrifluoride to 4,4′-bicyclohexanol followed by reduction of the resulting dinitro compound. The new compounds have been characterized by multinuclear NMR and IR spectroscopy and high-resolution liquid chromatography-mass spectrometry as well as single-crystal X-ray diffraction on the new diamine prepared from 4,4′-bicyclohexanol. Not only was the structure of the proposed new diamine confirmed, but another interesting example of hydrogen bonding between an N-H proton and the π-system of an aromatic ring was observed and documented. Initial polymerizations have been carried out via the two-step imidization process.
TI - New Fluorine-Containing Diamine Monomers for Potentially Improved Polyimides
JF - Molecules
DO - 10.3390/molecules28196855
DA - 2023-09-28
UR - https://www.deepdyve.com/lp/multidisciplinary-digital-publishing-institute/new-fluorine-containing-diamine-monomers-for-potentially-improved-xD13UJBmf7
SP - 6855
VL - 28
IS - 19
DP - DeepDyve
ER -