Cicada-Wing-Inspired Nanopillar Hydrogels Consisting of Poly(vinyl alcohol) and Poly(methacrylic acid) for Capturing Bacteria through Their Flexibility and Wide Range of Motion,ACS Macro Letters

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Cicada-Wing-Inspired Nanopillar Hydrogels Consisting of Poly(vinyl alcohol) and Poly(methacrylic acid) for Capturing Bacteria through Their Flexibility and Wide Range of Motion
ACS Macro Letters ( IF 5.1 ) Pub Date : 2022-05-16 , DOI: 10.1021/acsmacrolett.2c00126
Kazuma Fujimoto ₁ , Akihiro Saito ₁ , Yohei Kotsuchibashi ₁

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The human race has learned about countering bacterial infection from other living organisms. In this study, cicada-wing-inspired hydrophilic nanopillars were prepared using commercially available porous alumina templates without the use of specialized equipment and additional materials. Hydrophilic polymers of poly(vinyl alcohol) (PVA) and poly(methacrylic acid) (poly(MAAc)) were used to construct these nanopillars. The water-insoluble nanopillars formed by thermal cross-linking between the hydroxy and carboxy groups were highly flexible, with no significant structural disruption being observed on tilting them. The nanopillars captured Gram-negative and Gram-positive bacteria, despite their negatively charged surface leading an electrostatic repulsion with bacteria. The wing of the cicada has evolved to remain dry and maintain its lightweight. The water-containing cicada-wing structure may be an unknown encounter for bacteria and, thus, may become a countermeasure against the ever-changing bacteria.

中文翻译：

由聚（乙烯醇）和聚（甲基丙烯酸）组成的蝉翼启发纳米柱水凝胶通过其灵活性和广泛的运动范围来捕获细菌

人类已经学会了对抗来自其他生物体的细菌感染。在这项研究中，使用市售的多孔氧化铝模板制备了受蝉翼启发的亲水纳米柱，而无需使用专门的设备和其他材料。聚（乙烯醇）（PVA）和聚（甲基丙烯酸）（聚（MAAc））的亲水聚合物用于构建这些纳米柱。通过羟基和羧基之间的热交联形成的水不溶性纳米柱具有高度的柔韧性，在倾斜它们时没有观察到明显的结构破坏。纳米柱捕获革兰氏阴性和革兰氏阳性细菌，尽管它们带负电的表面导致与细菌的静电排斥。蝉的翅膀已经进化为保持干燥并保持其重量轻。

更新日期：2022-05-16

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