Ultrafast fabrication of organohydrogels with UV-blocking, anti-freezing, anti-drying, and skin epidermal sensing properties using lignin–Cu2+ plant catechol chemistry,Journal of Materials Chemistry A

当前位置： X-MOL 学术 › J. Mater. Chem. A › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Ultrafast fabrication of organohydrogels with UV-blocking, anti-freezing, anti-drying, and skin epidermal sensing properties using lignin–Cu2+ plant catechol chemistry
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2021-5-29 , DOI: 10.1039/d1ta02139g
Dan Sun _{1,

2,

3,

4,

5} , Nan Li _{1,

2,

3,

4,

5} , Jun Rao _{1,

2,

3,

4,

5} , Siyu Jia _{1,

2,

3,

4,

5} , Zhenhua Su _{5,

6,

7} , Xiang Hao _{1,

2,

3,

4,

5} , Feng Peng _{1,

2,

3,

4,

5}

Affiliation

Rapid fabrication of organohydrogels at room temperature without external stimuli is a challenge. Inspired by plant catechol chemistry, a self-catalytic system established using sodium lignosulfonate and copper(II) ions (Ls–Cu²⁺) has been developed and applied to fabricate organohydrogels rapidly with fascinating multifunctional properties. The Ls–Cu²⁺ pair can induce ammonium persulfate (APS) to generate free radicals at room temperature, and subsequently initiate the free radical polymerization of hydroxyethyl acrylamide (HEAA) in water–glycerol binary phases in less than 30 s, without the removal of oxygen. The presence of the Ls–Cu²⁺ pair also endows the organohydrogel materials with fascinating UV-blocking (∼100%) and electrically conductive properties, and thereby they can be exploited as epidermal sensors. Owing to the presence of glycerol, the as-prepared organohydrogel exhibits intriguing anti-freezing (∼−50 °C) and anti-drying abilities (22–60 °C). This work taps the potential of dynamic plant catechol chemistry in the field of organohydrogel materials.

中文翻译：

使用木质素-Cu2+ 植物儿茶酚化学超快制造具有紫外线阻断、抗冻、抗干燥和皮肤表皮传感特性的有机水凝胶

在没有外部刺激的情况下在室温下快速制备有机水凝胶是一项挑战。受植物儿茶酚化学的启发，使用木质素磺酸钠和铜（II）离子（Ls-Cu ²⁺）建立的自催化系统已被开发并应用于快速制造具有迷人多功能特性的有机水凝胶。Ls-Cu ²⁺对可以在室温下诱导过硫酸铵 (APS) 产生自由基，随后在不到 30 秒的时间内引发羟乙基丙烯酰胺 (HEAA) 在水-甘油二元相中的自由基聚合，而无需去除的氧气。Ls-Cu ²⁺的存在对还赋予有机水凝胶材料迷人的紫外线阻挡（~100%）和导电特性，因此它们可以用作表皮传感器。由于甘油的存在，所制备的有机水凝胶表现出耐人寻味的抗冻（~-50°C）和抗干燥能力（22-60°C）。这项工作挖掘了动态植物儿茶酚化学在有机水凝胶材料领域的潜力。

更新日期：2021-06-15

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南