Branched fluoropolymer-Si hybrids via surface-initiated ATRP of pentafluorostyrene on hydrogen-terminated Si(100) surfaces

Langmuir : the ACS Journal of Surfaces and Colloids
F J XuK G Neoh

Abstract

Linear, branched, and arborescent fluoropolymer-Si hybrids were prepared via surface-initiated atom transfer radical polymerization (ATRP) from the 4-vinylbenzyl chloride (VBC) inimer and ClSO(3)H-modified VBC that were immobilized on hydrogen-terminated Si(100), or Si-H, surfaces. The simple approach of UV-induced coupling of VBC with the Si-H surface provided a stable, Si-C bonded monolayer of "monofunctional" ATRP initiators (the Si-VBC surface). The aromatic rings of the Si-VBC surface were then sulfonated by ClSO(3)H to introduce sulfonyl chloride (-SO(2)Cl) groups and to give rise to a monolayer of "bifunctional" ATRP initiators. Kinetics study indicated that the chain growth of poly(pentafluorostyrene) from the functionalized silicon surfaces was consistent with a "controlled" or "living" process. The chemical composition and functionality of the silicon surface were tailored by the well-defined linear and branched fluoropolymer brushes. Atomic force microscopy images revealed that the surface-initiated ATRP of pentafluorostyrene (PFS) had proceeded uniformly on the Si-VBC surface to give rise to a dense and molecularly flat surface coverage of the linear brushes. The uniformity of surfaces with branched brushes was cont...Continue Reading

References

Dec 26, 2001·Chemical Reviews·K Matyjaszewski, J Xia
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Jun 30, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Gwenaël Chamoulaud, Daniel Bélanger
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Citations

Jan 1, 2013·Materials Science & Engineering. C, Materials for Biological Applications·Serkan Demirci, Tuncer Caykara
Nov 23, 2006·Colloids and Surfaces. B, Biointerfaces·Tatsuya TsukagoshiNorio Yoshino
Oct 23, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Michael K F LoHarold G Monbouquette
Jun 14, 2011·Macromolecules·Sergei S SheikoMichael Rubinstein
Jul 17, 2020·Polymers·Mingxiao Li, Christian W Pester
May 20, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Isaac W Moran, Kenneth R Carter

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