Slippery liquid-infused porous surface (SLIPS) has attracted widespread attention in marine antifouling field, but it lacks the contact-killing ability, which limits its long-term anti-fouling efficiency. Herein, a SLIPS endowed with both resist and contact-killing antimicrobial performances is reported. Firstly, anodic aluminum oxides (AAO) with composite structures of the pores and pyramids were prepared and modified with siloxane. Then, a silicone oil containing quaternary ammonium salt (QAS-SO) groups was synthesized and infused into specially designed AAO, forming a QAS-SLIPS. The surface demonstrated remarkably anti-bacterial performances both Gram-positive sp. and Gram-negative , and also maintained essential contact-killing antimicrobial activities from the grafted QAS groups. Biofouling testing suggested excellent antifouling performances of the QAS-SLIPS by declining the adhesion of 90.6 % and 74.1 % of . Overall, the antifouling performance of QAS-SLIPS comes primarily from two aspects, including physical isolation and contact-killing. Due to the easy of synthesis and excellent broad-spectrum antifouling effects, the QAS-SO could be potentially used for the development of antifouling coatings or as a lubricant for other devices.

中文翻译：

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季铵盐注入环氧硅油改性双功能海洋防污涂料的制备

滑液注入多孔表面(SLIPS)在海洋防污领域引起了广泛关注，但其缺乏接触杀灭能力，限制了其长期防污效率。本文报道了一种具有抵抗和接触杀灭抗菌性能的 SLIPS。首先，制备了具有孔和金字塔复合结构的阳极氧化铝（AAO），并用硅氧烷对其进行了改性。然后，合成了含有季铵盐（QAS-SO）基团的硅油并将其注入专门设计的AAO中，形成QAS-SLIPS。该表面对革兰氏阳性菌均表现出显着的抗菌性能。和革兰氏阴性菌，并且还保持了嫁接的 QAS 组的基本接触杀灭抗菌活性。生物污垢测试表明，QAS-SLIPS 的粘附力分别下降了 90.6% 和 74.1%，具有出色的防污性能。总体而言，QAS-SLIPS的防污性能主要来自物理隔离和接触杀灭两个方面。由于易于合成和优异的广谱防污效果，QAS-SO有望用于防污涂料的开发或作为其他设备的润滑剂。