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Design and synthesis of reactive polymers containing perfluorocyclobutyl (PFCB) and hydroxyl moieties for postfunctionalization of PFCB aryl ether polymers
Design and synthesis of reactive polymers containing perfluorocyclobutyl (PFCB) and hydroxyl moieties for postfunctionalization of PFCB aryl ether polymers
A novel class of perfluorocyclobutyl (PFCB)-containing reactive polymer with adjustable phenolic hydroxyl
contents (PFCB-OH-xx) has been developed. A serial of PFCB-OH-xx polymers with high molecular
weights (Mw > 100,000) and narrow molecular weight distributions (Mw/Mn < 1.15), were facilely prepared
from 2-methoxy-1,4-bis(trifluorovinyloxy)phenyl via thermal cyclopolymerization and demethylation
reactions. The monomer and polymers were characterized by FT-IR and NMR spectra. PFCB-OH-xx
polymers exhibit good thermal stability and excellent solubility in common organic solvents. Initial
investigation of the use of PFCB-OH-xx polymers as precursors in post-functionalization of PFCB aryl
ether polymers, was successfully accomplished by a nucleophilic ring-opening reaction between the
phenolic hydroxyl groups and 1,3-propanesultone. The degree of functionalization can be readily
controlled by adjusting the hydroxyl contents of PFCB-OH-xx polymers. This work demonstrates that the
designed PFCB-OX-xx polymers could be a class of promising precursor for development of new functional
PFCB aryl ether polymers
