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首页> 外文期刊>RSC Advances >Controllable wettability and adhesion of superhydrophobic self-assembled surfaces based on a novel azobenzene derivative
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Controllable wettability and adhesion of superhydrophobic self-assembled surfaces based on a novel azobenzene derivative

机译：基于新型偶氮苯衍生物的超疏水自组装表面的可控润湿性和粘附性

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摘要

Superhydrophobic surfaces with controllable adhesion have received considerable attention due to their potential in numerous applications. Here, we report a controllable adhesion of superhydrophobic surfaces through tuning the self-assembly structure based on a novel Y-shaped molecule AOB-Y8, consisting of azobenzene groups, 1,3,4-oxadiazole moieties, and three octyl chains. The surface hydrophobicity of AOB-Y8 films was successfully regulated by tuning the assembly morphologies through changing the composition of CHCl3/CH3CN mixed solvents, concentration and temperature. Morphological studies of the film prepared from 50 : 50 CHCl3/CH3CN solvents revealed that the self-assembled hierarchical, flower-like structure constructs a lot of grooves to trap the surrounding air, generating the superhydrophobic effect at room temperature. Particularly, the surface adhesion of this superhydrophobic film was further regulated from a low level to a very high level by simply changing the concentration of AOB-Y8 in mixed solvents. Meanwhile, the AOB-Y8 self-assembled surfaces showed an excellent chemical resistance to acid and alkali, which is suitable for applications in many environmental conditions. As examples, the tunable adhesive superhydrophobic AOB-Y8 surfaces demonstrated good features to be used in selective transportation of droplets, self-cleaning and droplet-based microreactors to quantitatively detect NaOH and FeCl3.
机译：由于许多应用中的潜力，具有可控粘合性的超疏水表面受到了相当大的关注。这里，我们通过基于基于新的Y形分子AOB-Y8调节自组装结构，通过偶氮苯，1,3,4-恶一唑部分和三个辛基链组成，通过调节自组装结构来报告超疏水表面的可控粘附。通过改变CHCl 3 / CH 3CN混合溶剂的组合物，浓缩和温度调节组装形态来成功调节AOB-Y8膜的表面疏水性。由50：50 CHCl3 / CH 3CN溶剂制备的薄膜的形态学研究表明，自组装的等级，花状结构构成大量凹槽以捕获周围空气，在室温下产生超疏水效果。特别地，通过简单地改变混合溶剂中的AOB-Y8浓度，将该超疏水膜的表面粘附从低水平的低水平调节到非常高的水平。同时，AOB-Y8自组装表面对酸和碱性的优异的耐化学性，适用于许多环境条件中的应用。作为实例，可调谐粘合剂超细杂志AOB-Y8表面证明了用于液滴，自清洁和基于液滴的微反应器的选择性运输以定量检测NaOH和FECL3的良好特征。

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  • 来源
    《RSC Advances》 |2017年第79期|共7页
  • 作者

    Gao Qiongqiong; He Liu; Li Yajie; Ran Xia; Guo Lijun;

  • 作者单位

    Henan Univ Inst Micro Nano Photon Mat &

    Applicat Kaifeng 475004 Peoples R China;

    Henan Univ Inst Micro Nano Photon Mat &

    Applicat Kaifeng 475004 Peoples R China;

    Henan Univ Inst Micro Nano Photon Mat &

    Applicat Kaifeng 475004 Peoples R China;

    Henan Univ Inst Micro Nano Photon Mat &

    Applicat Kaifeng 475004 Peoples R China;

    Henan Univ Inst Micro Nano Photon Mat &

    Applicat Kaifeng 475004 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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