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Surface-Initiated Ring-Opening Metathesis Polymerization Of Pentadecafluorooctyl-5-norbornene-2-carboxylate From Variable Substrates Modified With Sticky Biomimic Initiator

Qian Ye, X. Wang, S. Li, F. Zhou
Published 2010 · Chemistry

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A novel strategy is reported to produce low surface energy poly(pentadecafluorooctyl-5-norbornene-2-carboxylate) brushes (PNCA-F15) on surfaces of variable metals and metallic oxides. PNCA-F15 brushes are grafted from biomimic catecholic initiator via surface-initiated ring-opening metathesis polymerization at ambient conditions. The biomimic catecholic initiator can assemble on a variety of substrates, such as Ti(TiO2), Al(Al2O3), steel, Au, Cu, Ag, and Zn, and on both nanoparticles and planar substrates, allowing successful grafting of low surface energy polymer brushes from these substrates. The polymer brush modified substances were characterized by thermogravimetric analysis, X-ray photoelectron spectroscopy, water contact angle measurements, and atomic force microscopy. The PNCA-F15 brushes grow progressly with time with highly uniform surface coverage. Very uniform polymer layer with the thickness 11 nm is obtained after 2 h polymerization at 0.25 M monomer concentration. Thermogravimetric analysis...

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