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. 2020 Oct 29;6(11):2031–2045. doi: 10.1021/acscentsci.0c00755

Figure 1.

Figure 1

Illustrations and synthesis scheme of antifouling and nitric oxide (NO) emitting diblock copolymer brush ((#10) H(N)-b-S) grafted from a PU catheter: (A) The diblock copolymer with a subsurface NO-emitting block modified from poly(HEMA) (H) with a RSNO (N) and a surface block of antifouling poly(SBMA) (S). (B) Flow reactor for surface modification of a long catheter with long narrow lumen (gray arrows: flow of monomer solution). (C) Synthesis scheme of diblock copolymer (#10) H(N)-b-S coating via ozone pretreatment of PU followed by surface-initiated RAFT diblock copolymerization. (CTA is chain transfer agent of 4-cyano-4-(phenylcarbonothioylthio) pentanoic acid (CPCPA), and ACVA is the thermal initiator 4,4′-azobis(4-cyanopentanoic acid)).