Theoretical Study of the Optimal Design of a UV-Controllable Smart Surface Decorated by a Hybrid Azobenzene-Containing Polymer Layer
Theoretical Study of the Optimal Design of a UV-Controllable Smart Surface Decorated by a Hybrid Azobenzene-Containing Polymer Layer
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杂化含偶氮苯聚合物层装饰的紫外可控智能表面优化设计的理论研究
DOI：
10.1021/acs.langmuir.9b03009
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发表时间：
2019-10-29
期刊：
影响因子：
3.9
通讯作者：
Suo, Tongchuan
中科院分区：
文献类型：
--
作者：
Bu, Xiangyu;Zhang, Shuangshuang;Suo, Tongchuan
尽管人们普遍建议将聚合物嫁接到表面来设计智能系统，但优化此类系统的性能并不容易。在本文中，我们利用平均场中的单链理论研究了一种基于偶氮聚合物的智能表面。通过数值模拟，我们研究了系统的附着/擦除转变，表明智能表面的性能可以用UV-ON和UV-OFF状态下纳米粒子与表面的有效相互作用的差异来表征。进一步探索智能表面的优化，我们发现受体的分布函数可以具有典型的双峰特性，这对于优化偶氮键沿偶氮聚合物的位置f是至关重要的。此外，均聚物的存在对于智能表面的最佳性能也是必不可少的，我们为f和均聚物设计f(Homo)的良好组合建立了参考图。
Although grafting polymers onto surfaces is widely suggested for designing smart systems, optimizing the performance of such systems is not simple. In this article, we investigate an azo-polymer-based smart surface using the single-chain-in-mean-field theory. Through the numerical simulations, we study the adhesion/erasion transition of the system and show that the performance of the smart surface can be characterized by the difference between the effective nanoparticle-surface interactions in the UV-on and UV-off states. Further exploring the optimization of the smart surface, we find that the distribution function of the receptor can have typical bimodal characteristics, which is crucial for optimizing the position of the azo-bond along the azo-polymer, f. Moreover, the presence of the homopolymer is also essential for the optimal performance of the smart surface, and we build a reference map for the good combinations of f and the homopolymer design f(homo).