Post modification of acetylene functional poly(oxindole biphenylylene) by photoinduced CuAAC

Functionalization of Poly(oxindole biphenylylene) membranes by photoinduced thiol-yne click chemistry

“…As can be seen from Figure 6, the characteristic melting temperature (Tm) of the PEG unit for the graft copolymer appears between 40-52 °C while the melting point of the PEG precursor before the reaction was detected at 55 °C. Similar shifts were previously observed for graft copolymers possessing PEG side chains 26 . Besides the functionalization with PEG, the photo-induced thiol-yne click reaction strategy was used in this work for polymeric membrane crosslinking.…”

One-Step, Room Temperature Synthesis of Well-Defined, Organo-Soluble Multifunctional Aromatic Polyimides

“…The rigid contorted structure of the bulky side oxindole prevents efficient packing in the solid-state and provides these polymers with improved solubility without any decrease in thermal stability. Furthermore, isatin-based polymers can be further chemically modified by the insertion of highly reactive allyl- and propargyl groups , or by facilitating grafting. , …”

“…Furthermore, isatinbased polymers can be further chemically modified by the insertion of highly reactive allyl-and propargyl groups 36,38 or by facilitating grafting. 37,39 To the best of our knowledge, the polymers based on isatin and diimides containing ortho-positioned hydroxyl groups have not been reported, whereas those based on 2,2,2trifluorocetophenone have been reported but obtained by a classical polyimide synthesis involving a three-step-synthesized diamine monomer (1-bis[4-(4-aminophenoxy)phenyl]-1-phenyl-2,2,2-trifluoroethane). 40 The attempts to prepare aromatic PIs by one-step synthesis using such catalyst−solvent systems as salicylic acid 41 and ionic liquids (1-ethyl-3-methylimidazolium acetate) are also worthy of note.…”