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Antimicrobial spray nanocoating of supramolecular Fe(III)-tannic acid metal-organic coordination complex: applications to shoe insoles and fruits

机译:Fe(III)-单宁酸金属-有机配位化合物的超分子抗菌喷涂纳米涂层:在鞋垫和水果中的应用

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摘要

Numerous coating strategies are available to control the surface properties and confer new properties to substrates for applications in energy, environment, biosystems, etc., but most have the intrinsic limitations in the practical setting: (1) highly specific interactions between coating materials and target surfaces are required for stable and durable coating; (2) the coating of bulk substrates, such as fruits, is time-consuming or is not achievable in the conventional solution-based coating. In this respect, material-independent and rapid coating strategies are highly demanded. We demonstrate spray-assisted nanocoating of supramolecular metal-organic complexes of tannic acid and ferric ions. The spray coating developed is material-independent and extremely rapid (<5 sec), allowing for coating of commodity goods, such as shoe insoles and fruits, in the controlled fashion. For example, the spray-coated mandarin oranges and strawberries show significantly prolonged post-harvest shelf-life, suggesting practical potential in edible coating of perishable produce.
机译:有许多涂层策略可用于控制表面特性并赋予基材新的特性,以用于能源,环境,生物系统等方面,但大多数策略在实际应用中具有固有的局限性:(1)涂层材料与靶材之间的高度特异性相互作用表面需要稳定和耐用的涂层; (2)诸如水果的散装基质的涂层是费时的或在常规的基于溶液的涂层中是无法实现的。在这方面,非常需要与材料无关的快速涂覆策略。我们展示了丹宁酸和铁离子的超分子金属-有机配合物的喷雾辅助纳米涂层。所开发的喷涂层与材料无关,并且速度极快(<5µsec),可以以受控方式对商品(例如鞋垫和水果)进行涂层。例如,喷涂的橘子和草莓显示出明显延长的收获后货架期,表明在易腐产品的可食用涂层中具有实际应用潜力。

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