Low bioaccumulative materials for parahygrophobic nanosheets with sticking behaviour.
Low bioaccumulative materials for parahygrophobic nanosheets with sticking behaviour.
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DOI：
10.1016/j.jcis.2014.10.016
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发表时间：
2015-06
影响因子：
9.9
通讯作者：
Janwa El-Maiss;Thierry Darmanin;F. Guittard
中科院分区：
文献类型：
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作者：
Janwa El-Maiss;Thierry Darmanin;F. Guittard
在这里，我们报告了通过电聚合原始3,4丙烯二氧噻吩（ProDOT）衍生物形成表面纳米片，该衍生物带有短全氟丁基链（C4F9）和不同长度的支化烷基链，以降低所获得材料的生物累积潜力。纳米片的尺寸取决于支化烷基链的尺寸。这些纳米结构表现出副疏湿特性（各种液体探针的表观接触角 θ > θY，其中 θY 是相应光滑表面的杨氏角），具有极高的液体粘附力。这些特性是由于纳米片之间存在纳米孔隙，这有利于 Cassie-Baxter 状态，但由于纳米片和液体之间的重要接触而具有高粘附力。从理论角度来看，这些结果对于研究具有高接触角和高粘附力的表面也极其重要。这种材料还可以用于水收集系统，特别是在炎热的环境中。
Here, we report the formation of surface nanosheets by electropolymerization of original 3,4 propylenedioxythiophene (ProDOT) derivatives bearing both a short perfluorobutyl chain (C4F9) and a branched alkyl chain of various lengths in order to reduce the bioaccumulative potential of the obtained materials. The dimension of the nanosheets is dependent on the size of the branched alkyl chain. These nanostructures display parahygrophobic properties (apparent contact angle θ > θYfor various liquid probes, where θYis the Young angle of the corresponding smooth surface) with an extremely high liquid adhesion. These properties are due to the presence of nanoporosity between the nanosheets, which favours the Cassie–Baxter state but with high adhesion due to an important contact between the nanosheets and the liquids. These results are extremely important also in a theoretical point of view in the aim to study surfaces with high contact angles and high adhesion. Such materials could also be used in water harvesting systems especially in hot environment.