1125607-84-2Relevant academic research and scientific papers
Novel perfluorocyclobutyl aryl ether-based well-defined amphiphilic block copolymer
Yao, Wenqiang,Li, Yongjun,Zhang, Sen,Liu, Hao,Huang, Xiaoyu
, p. 4433 - 4440 (2012/05/20)
A series of fluorine-containing amphiphilic diblock copolymers comprising hydrophobic poly(p-(2-(p-tolyloxy)perfluorocyclobutoxy)phenyl methacrylate) (PTPFCBPMA) and hydrophilic poly(2-(diethylamino)ethyl methacrylate) (PDEAEMA) segments were synthesized via successive reversible addition fragmentation chain transfer (RAFT) polymerizations. RAFT homopolymerization of p-(2-(p-tolyloxy)perfluorocyclobutoxy)phenyl methacrylate was first initiated by 2,2′-azobisisobutyronitrile using cumyl dithiobenzoate as chain transfer agent, and the results show that the procedure was conducted in a controlled way as confirmed by the fact that the number-average molecular weights increased linearly with the conversions of the monomer while the polydispersity indices kept below 1.30. Dithiobenzoate-capped PTPFCHPMA homopolymer was then used as macro-RAFT agent to mediate RAFT polymerization of 2-(diethylamino)ethyl methacrylate, which afforded PTPFCBPMA-b-PDEAEMA amphiphilic diblock copolymers with different block lengths and narrow molecular weight distributions (M w/Mn ≤ 1.28). The critical micelle concentrations of the obtained amphiphilic diblock copolymers were determined by fluorescence spectroscopy technique using N-phenyl-1-naphthylamine as probe. The morphology and size of the formed micelles were investigated by transmission electron microscopy and dynamic light scattering, respectively.
Synthesis and characterization of fluorine-containing PAA-b-PTPFCBPMA amphiphilic block copolymer
Li, Yongjun,Zhang, Sen,Liu, Hao,Li, Qingnuan,Li, Wenxin,Huang, Xiaoyu
, p. 5419 - 5429 (2011/06/21)
A series of perfluorocyclobutyl (PFCB) aryl ether-based amphiphilic diblock copolymers containing hydrophilic poly(acrylic acid) (PAA) and fluorophilic poly(p-(2-(p-tolyloxy)perfluorocyclobutoxy)phenyl methacrylate) segments were synthesized via successive atom transfer radical polymerization (ATRP). 2-MBP-initiated and CuBr/N,N,N′,N′,N″- pentamethyldiethylenetriamine-catalyzed ATRP homopolymerization of the PFCB-containing methacrylate monomer, p-(2-(p-tolyloxy)perfluorocyclobutoxy) phenyl methacrylate, can be performed in a controlled mode as confirmed by the fact that the number-average molecular weights (Mn) increased linearly with the conversions of the monomer while the polydispersity indices kept below 1.38. The block copolymers with narrow molecular weight distributions (Mw/Mn & 1.36) were synthesized by ATRP using Br-end-functionalized poly(tert-butyl acrylate) (PtBA) as macroinitiator followed by the acidolysis of hydrophobic PtBA block into hydrophilic PAA segment. The critical micelle concentrations of the amphiphilic diblock copolymers in different surroundings were determined by fluorescence spectroscopy using N-phenyl-1-naphthylamine as probe. The morphology and size of the micelles were investigated by transmission electron microscopy and dynamic laser light scattering, respectively.
Perfluorocyclobutyl-based methacrylate monomers: Synthesis and radical polymerization
Li, Yongjun,Zhang, Sen,Tong, Liang,Li, Qingnuan,Li, Wenxin,Lu, Guolin,Liu, Hao,Huang, Xiaoyu
experimental part, p. 354 - 360 (2009/12/07)
A new class of methacrylate monomers containing perfluorocyclobutyl unit was synthesized in multi-steps including crossing-dimerization, demethylation and esterification using commercially available p-substituted phenol, tetrafluoroethylene and methacryloyl chloride as starting materials. These monomers can be polymerized in solution to provide perfluorocyclobutyl-based polymethacrylate, a kind of potential transparent material.
