Superior water anchoring hydrogel validated by colorimetric sensing,Materials Horizons

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Superior water anchoring hydrogel validated by colorimetric sensing
Materials Horizons ( IF 12.2 ) Pub Date : 2020-10-13 , DOI: 10.1039/d0mh01383h
Xiaoyun Hu _{1,

2,

3,

4,

5} , Zhiwei Ma _{1,

2,

3,

4,

5} , Jiguang Li _{1,

2,

3,

4,

5} , Zhenzhen Cai _{1,

2,

3,

4,

5} , Yushu Li _{1,

2,

3,

4,

5} , Baiyi Zu _{1,

2,

3,

4,

5} , Xincun Dou _{1,

2,

3,

4,

5}

Affiliation

The exploration of water-retention hydrogels is of great significance for electronics, tissue engineering, biomedical devices, and various fields that rely on hydrogels as platforms. However, the development of efficient water retention hydrogels still encounters severe challenges despite a series of proposed design principles. Here, we try to explore moisturizing hydrogels and evaluate the water retention capability from the perspective of color signal conservation considering its visualization feature. An interpenetrating hydrogel with an alternating hydrophilic and hydrophobic structure constructed by micelles and rigid chains was proposed from the perspective of manipulating the water state through chain state and inter-segment interaction forces brought by the hydrogel network. Due to the efficient reduction of the kinetic activation energy brought by the strong bonding of water molecules to the hydrophilic polymer chain and the repelling effect of water molecules to the wrinkled corners by the hydrophobic chain, remarkable water anchoring ability was achieved. The proposed water retention strategy was evidenced by the remarkably restricted color diffusion of dye particles and the reaction product resulting from the specific probe molecules with urea particles. We expect that the present water anchoring design strategy would open up a brand-new methodology for the exploration of high-performance moisturizing hydrogels and efficient colorimetric hydrogel devices.

中文翻译：

比色传感验证了高级水锚定水凝胶

保水凝胶的探索对于电子学，组织工程，生物医学设备以及以水凝胶为平台的各个领域都具有重要意义。然而，尽管提出了一系列设计原则，但高效保水水凝胶的开发仍面临严峻挑战。在这里，我们尝试探索保湿水凝胶，并考虑到其可视化功能，从彩色信号保护的角度评估保水能力。从通过水凝胶网络带来的链状态和段间相互作用力操纵水状态的角度出发，提出了一种由胶束和刚性链构成的具有交替的亲水和疏水结构的互穿水凝胶。由于有效减少了水分子与亲水性聚合物链的牢固键合所带来的动能，以及疏水链对水分子对皱角的排斥作用，因此获得了显着的水锚定能力。所提出的保水策略通过染料颗粒和特定探针分子与尿素颗粒产生的反应产物的显着受限的颜色扩散而得到证明。我们希望当前的水锚设计策略将为探索高性能保湿水凝胶和高效比色水凝胶设备开辟一种全新的方法。

更新日期：2020-11-03

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