Schiff‐base‐functionalized polymeric hydrogel with high stretchability and multifunction

Schiff‐base‐functionalized polymeric hydrogel with high stretchability and multifunction
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希夫碱功能化聚合物水凝胶,具有高拉伸性和多功能性

DOI:
10.1002/pat.5225
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发表时间:
2021-01
影响因子:
3.4
通讯作者:
Jinqing Qu
Jinqing Qu
中科院分区:
工程技术4区
文献类型:
--
作者:
Shanshan Liao;Liuyan Tang;Jinqing Qu

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在这里,我们报道了一种新型的水杨醛基席夫碱官能化聚合物水凝胶(SSb-hydrogel),具有优异的拉伸性,温度响应性,自修复性能和可调荧光强度。SSb-水凝胶是通过丙烯酰胺(AAm)、N-异丙基丙烯酰胺(NIPAM)和疏水性交联剂(AVIMP)的一锅胶团共聚合获得的。SSb-水凝胶的三维网络是由AVIMP的化学交联和AVIMP分子之间的疏水相互作用形成的。SSb‐水凝胶能够拉伸至其原始长度的1900%而不断裂,并且其透明度可通过温度调节。该水凝胶也具有可调的荧光控制的Zn 2 +/EDTA,其荧光增加了640%,与0.1 M Zn 2+。它的荧光特性使我们能够在它的表面反复书写。这种高度可拉伸和多功能的SSb-水凝胶在温度敏感材料,信息传输和软传感器方面具有潜在的应用。
Here we report a novel salicylaldehyde‐based Schiff‐base‐functionalized polymeric hydrogel (SSb‐hydrogel) with excellent stretchability, temperature responsiveness, self‐healing property, and adjustable fluorescence intensity. The SSb‐hydrogel was obtained by a one‐pot micellar copolymerization of acrylamide (AAm),N‐isopropylacrylamide (NIPAM), and a hydrophobic cross‐linking agent (AVIMP). The three‐dimensional network of SSb‐hydrogel was formed by the chemical cross‐linking of AVIMP and the hydrophobic interaction between AVIMP molecules. The SSb‐hydrogel was able to stretch up to 1900% of its original length without fracture, and its transparency was adjustable by temperature. This hydrogel also had tunable fluorescence controlled by Zn2+/EDTA, and its fluorescence increased by 640% with 0.1 M Zn2+. Its fluorescence property enabled us to write on its surface repeatedly. This highly stretchable and multifunctional SSb‐hydrogel has potential applications in temperature‐sensitive materials, information transmission, and soft sensors.
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具有可调荧光、高拉伸性、形状记忆和自修复特性的金属水凝胶
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