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Issue 25, 2020
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Reactive films fabricated using click sulfur(vi)–fluoride exchange reactions via layer-by-layer assembly

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Abstract

The fabrication of multilayer assemblies from polymeric compounds is an important tool for meeting the increasing demand in functional surface-based research areas. In this report, a novel and efficient approach for the fabrication of polymer multilayered films using the “sulfur(VI)–fluoride exchange” (SuFEx) click reaction is described. To develop this approach, a sulfonyl fluoride-rich polymer, poly(N-vinyl-2-pyrrolidone)-co-poly(3-(fluorosulfonyl)-propyl methacrylate) (PVP-co-PFPM), and a silyl ether-rich polymer, tert-butyldimethylsilyl-modified polyvinyl alcohol (PVA-TBDMS), were chosen as model polymers. Through step-and-repeat spin-assisted layer-by-layer (LbL) procedures, multilayer films are then generated in which all the individual layers are covalently bonded to each other. Furthermore, multilayer films containing free sulfonyl fluoride groups can be readily functionalized via the SuFEx click reaction to tailor the properties of the films for various potential applications. As a proof-of-concept, using the (PVA-TBDMS/PVP-co-PFPM)5 multilayer as a model film, the utility of the residual sulfonyl fluoride functionality for biomedical applications, such as H2S biosensors and antibiofouling and antibacterial films, is demonstrated.

Graphical abstract: Reactive films fabricated using click sulfur(vi)–fluoride exchange reactions via layer-by-layer assembly

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Supplementary files

Article information


Submitted
06 Apr 2020
Accepted
16 May 2020
First published
18 May 2020

J. Mater. Chem. B, 2020,8, 5529-5534
Article type
Paper

Reactive films fabricated using click sulfur(VI)–fluoride exchange reactions via layer-by-layer assembly

S. Liu, Y. Cao, Z. Wu and H. Chen, J. Mater. Chem. B, 2020, 8, 5529
DOI: 10.1039/D0TB00908C

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