PMID- 29100465 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20180801 LR - 20180801 IS - 1520-5827 (Electronic) IS - 0743-7463 (Linking) VI - 33 IP - 47 DP - 2017 Nov 28 TI - Capsaicin-Inspired Thiol-Ene Terpolymer Networks Designed for Antibiofouling Coatings. PG - 13689-13698 LID - 10.1021/acs.langmuir.7b03098 [doi] AB - Novel photocurable ternary polymer networks were prepared by incorporating N-(4-hydroxy-3-methoxybenzyl)-acrylamide (HMBA) into a cross-linked thiol-ene network based on poly(ethylene glycol)diacrylate (PEGDA) and (mercaptopropyl)methylsiloxane homopolymers (MSHP). The ternary network materials displayed bactericidal activity against Escherichia coli and Staphylococcus aureus and reduced the attachment of marine organism Phaeodactylum tricornutum. Extensive soaking of the polymer networks in aqueous solution indicated that no active antibacterial component leached out of the materials, and thus the ternary thiol-ene coating killed the bacteria by surface contact. The surface structures of the polymer networks with varied content ratios were studied by sum frequency generation (SFG) vibrational spectroscopy. The results demonstrated that the PDMS Si-CH(3) groups and mimic-capsaicine groups are predominantly present at the polymer-air interface of the coatings. Surface reorganization was apparent after polymers were placed in contact with D(2)O: the hydrophobic PDMS Si-CH(3) groups left the surface and returned to the bulk of the polymer networks, and the hydrophilic PEG chains cover the polymer surfaces in D(2)O. The capasaicine methoxy groups are able to segregate to the surface in an aqueous environment, depending upon the ratio of HMBA/PEGDA. SFG measurements in situ showed that the antibacterial HMBA chains, rather than the nonfouling PEG, played a dominant role in mediating the antibiofouling performance in this particular polymer system. FAU - Wang, Haiye AU - Wang H AUID- ORCID: 0000-0002-1928-2883 AD - College of Materials Science and Engineering, Donghua University , Shanghai 201620, P. R. China. AD - Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States. FAU - Jasensky, Joshua AU - Jasensky J AUID- ORCID: 0000-0002-7370-0265 AD - Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States. FAU - Ulrich, Nathan W AU - Ulrich NW AUID- ORCID: 0000-0003-1763-9268 AD - Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States. FAU - Cheng, Junjie AU - Cheng J AD - Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States. FAU - Huang, Hao AU - Huang H AD - Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States. FAU - Chen, Zhan AU - Chen Z AD - Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States. FAU - He, Chunju AU - He C AD - College of Materials Science and Engineering, Donghua University , Shanghai 201620, P. R. China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20171116 PL - United States TA - Langmuir JT - Langmuir : the ACS journal of surfaces and colloids JID - 9882736 EDAT- 2017/11/05 06:00 MHDA- 2017/11/05 06:01 CRDT- 2017/11/05 06:00 PHST- 2017/11/05 06:00 [pubmed] PHST- 2017/11/05 06:01 [medline] PHST- 2017/11/05 06:00 [entrez] AID - 10.1021/acs.langmuir.7b03098 [doi] PST - ppublish SO - Langmuir. 2017 Nov 28;33(47):13689-13698. doi: 10.1021/acs.langmuir.7b03098. Epub 2017 Nov 16.