Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 61, Issue 26, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202204410
Keywords
ATRP; Organic-Inorganic Hybrid; Persistent; Polymer Brushes; Wear Resistant
Categories
Funding
- National Natural Science Foundation of China [22032006]
- Key Research Program of the Chinese Academy of Sciences [XDPB24]
- Key Research Project of Shandong Provincial Natural Science Foundation [ZR2021ZD27]
- Young Talents Support Plan of Gansu Association for Science and Technology [GXH2020626-14]
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This study developed a novel surface initiated polymerization method using an organic-inorganic hybrid persistent initiator coating (PIC) with embedded initiator molecules. Compared to traditional silane initiators, PIC showed improved mechanical stability and wear resistance, and it can trigger new polymerization reactions even after wear. Furthermore, PIC can be applied on various substrates for material functionalization.
In this study, a novel surface initiated polymerization (SIP) method was developed from organic-inorganic hybrid persistent initiator coating (PIC) that embeds initiator molecules into inorganic silica sol-gel layer. Comparing with traditional silane initiator surface that prepared by chemical vapor deposition (CVD) method, the PIC can effectively improve the mechanical stability of initiator that was able to endure ten-thousand times of friction cycles. Besides, it allows polymer grafting from sub-surface and so the grafted brushes, poly 3-sulfopropyl methacrylate potassium salt (pSPMA) on the PIC were also much more wear-resisting than those prepared by the traditional ways. More importantly, the PIC could still trigger new polymerization reaction when the grafted brushes were worn off. In addition, the PIC is universal and can be covered on different substrates including glass, metals and plastics, etc. to realize functionalization of these materials. The approach may pave technological way for the application of surface grafted polymer brushes.
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