Enhanced antifouling strategy with a strong synergistic effect of fluorescent antifouling and contact bacteriostasis using 7-amino-4-methylcoumarin
Enhanced antifouling strategy with a strong synergistic effect of fluorescent antifouling and contact bacteriostasis using 7-amino-4-methylcoumarin
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7-氨基-4-甲基香豆素荧光防污和接触抑菌具有强大协同作用的增强型防污策略
DOI：
10.1016/j.cej.2020.127676
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发表时间：
2021-06-15
影响因子：
15.1
通讯作者：
Zhang, Qinghua
中科院分区：
文献类型：
--
作者：
Guo, Hongyu;Song, Lina;Zhang, Qinghua
低表面能涂层可以保护海洋设备免受生物污染，然而，由于缺乏水冲刷提供的剪切力，在静态应用中仍然是一个挑战。本文以聚二甲基硅氧烷（PDMS）、聚四氢呋喃（PTMG）为主链，7-氨基-4-甲基香豆素为端基，通过缩聚反应合成了一种聚氨酯。7-氨基-4-甲基香豆素除了在海水中对紫外波段具有高透过率的荧光响应外，其典型的苯并吡喃酮骨架还具有抗菌性能。基于PDMS的污垢释放表面由于荧光吸附和接触抑菌机理的强烈协同作用，在极少量（小于0.20 wt%）的吸附基团的情况下实现了上级吸附效果，这几乎是以往研究中最低的。而7-氨基-4-甲基香豆素可以从植物中天然提取，为环境友好的药物开发策略探索了新的研究方向。
Low surface energy coating can protect marine equipment from biofouling, however, remaining a challenge in static applications due to the lack of shear force provided by water scour. Herein, we developed a polyurethane with polydimethylsiloxane (PDMS), polytetrahydrofuran (PTMG) as main chains and 7-amino-4-methylcoumarin as antifouling group by condensation polymerization. Besides the fluorescence response to the ultraviolet band in seawater with high transmittance, the typical benzopyrone framework of 7-amino-4-methylcoumarin endows antibacterial properties. Owing to the strong synergistic effect of fluorescence antifouling and contact bacteriostasis mechanism, the PDMS-based fouling-release surface achieves a superior antifouling effect with an extremely small amount (less than 0.20 wt%) of the antifouling group, which is almost the lowest among previous research. And 7-amino-4-methylcoumarin can be naturally derived from plants, which explored novel research for environmentally friendly antifouling strategy.