Elasticity‐Dependent Fast Underwater Adhesion Demonstrated by Macroscopic Supramolecular Assembly,Angewandte Chemie International Edition

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Elasticity‐Dependent Fast Underwater Adhesion Demonstrated by Macroscopic Supramolecular Assembly
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-06-19 , DOI: 10.1002/anie.201803632
Guannan Ju ₁ , Mengjiao Cheng ₁ , Fengli Guo ₁ , Qian Zhang ₁ , Feng Shi ₁

Affiliation

Macroscopic supramolecular assembly (MSA) is a recent development in supramolecular chemistry to associate visible building blocks through non‐covalent interactions in a multivalent manner. Although various substrates (e.g. hydrogels, rigid materials) have been used, a general design rule of building blocks in MSA systems and interpretation of the assembly mechanism are lacking and are required. Herein we design three model systems with varied elastic modulus and correlated the MSA probability with the elasticity. Based on the effects of substrate deformability on multivalency, we have proposed an elastic‐modulus‐dependent rule that building blocks below a critical modulus of 2.5 MPa can achieve MSA for the used host/guest system. Moreover, this MSA rule applies well to the design of materials for fast underwater adhesion: Soft substrates (0.5 MPa) can achieve underwater adhesion within 10 s with one order of magnitude higher strength than that of rigid substrates (2.5 MPa).

中文翻译：

宏观超分子组装证明了与弹性有关的快速水下附着力

宏观超分子组装（MSA）是超分子化学的最新进展，它通过非共价相互作用以多价方式缔合了可见的结构单元。尽管已经使用了各种基材（例如水凝胶，硬质材料），但仍缺乏并且需要MSA系统中构建块的一般设计规则以及对组装机制的解释。在这里，我们设计了三个具有不同弹性模量的模型系统，并将MSA概率与弹性相关联。基于基材变形性对多价的影响，我们提出了一种取决于弹性模量的规则，即低于2.5 MPa的临界模量的构建块可以实现所用主机/客体系统的MSA。此外，此MSA规则非常适用于快速水下粘合的材料设计：软质基材（0。

更新日期：2018-06-19

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