Design and electrospinning synthesis of red luminescent-highly anisotropic conductive Janus nanobelt hydrogel array films†

IF 6 2区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Haina Qi, Huazhi Huang, Yaolin Hu, Ning Li, Liu Yang, Xuejian Zhang, Yongtao Li, Hongkai Zhao, Dan Li and Xiangting Dong
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引用次数: 0

Abstract

The preparation of anisotropic conducting hydrogels with high anisotropic conductivity using simple methods is a major challenge. Herein we present a new strategy for significantly enhancing the degree of anisotropic conductivity of hydrogel materials. Highly oriented Janus nanobelts are used as the building block to avoid undesirable interactions between conducting and insulating materials, resulting in highly conductive hydrogel materials. As a case study, in this paper, anisotropic conductive-luminescent bifunctional Janus nanobelt hydrogel array films (denoted as JAHFs) are prepared by parallel electrospinning and gelation, utilizing highly oriented Janus nanobelts, i.e. [Eu(TTA)3(TPPO)2/gelatin (GE)]//[carbon black (CB)/GE] Janus nanobelts, as building blocks. The high degree of integration between the highly oriented array film and the anisotropic conductive-luminescent materials endows the hydrogel material with high anisotropic conductivity and multifunctionality. The anisotropic conductivity of JAHFs is as high as 1.52 × 105 when the mass ratio of CB/GE is 7%, which achieves a significant increase in anisotropic conductivity through a simple preparation method. JAHFs have a distinct red luminescence at 616 nm. The tunability of luminescence and conductive anisotropy is demonstrated by adjusting the contents of Eu(TTA)3(TPPO)2 and CB. The tensile strength and the elongation at break of JAHFs along the parallel direction of Janus nanobelts are 0.61 MPa and 80.75%. The good mechanical properties of JAHFs provide a guarantee for the assembly of strain sensors. JAHFs exhibited rapid responses under various tensile strains and temperatures, and the assembled strain sensors are utilized to detect human joint motion with good stability and sensitivity. This method is also applicable to the preparation of other multifunctional anisotropic conducting hydrogel materials. This study contributes new approaches and technical support for enhancing the anisotropic conductivity of hydrogel materials and sets the groundwork for developing other multifunctional conductive hydrogel materials.

Abstract Image

红色发光-高各向异性导电Janus纳米带水凝胶阵列膜的设计与静电纺丝合成
用简单的方法制备具有高各向异性电导率的各向异性导电水凝胶是一个主要的挑战。本文提出了一种显著提高水凝胶材料各向异性电导率的新策略。高度定向的Janus纳米带被用作构建块,以避免导电和绝缘材料之间的不良相互作用,从而产生高导电性的水凝胶材料。以[Eu(TTA)3(TPPO)2/明胶(GE)]//[炭黑(CB)/GE] Janus纳米带为基块,采用平行静电纺丝和凝胶法制备了各向异性导电发光双功能Janus纳米带水凝胶阵列薄膜(JAHFs)。高取向阵列薄膜与各向异性导电发光材料之间的高度集成,使水凝胶材料具有高各向异性电导率和多功能性。当CB/GE质量比为7%时,JAHFs的各向异性电导率高达1.52 × 105,通过简单的制备方法实现了各向异性电导率的显著提高。jahf在616 nm处有明显的红色发光。通过调节Eu(TTA)3(TPPO)2和CB的含量,证明了其发光和导电各向异性的可调性。沿Janus纳米带平行方向的拉伸强度和断裂伸长率分别为0.61 MPa和80.75%。jahf良好的力学性能为应变传感器的装配提供了保证。在不同的拉伸应变和温度下,jahf具有快速的响应,装配的应变传感器用于检测人体关节运动,具有良好的稳定性和灵敏度。该方法也适用于其他多功能各向异性导电水凝胶材料的制备。本研究为提高水凝胶材料的各向异性电导率提供了新的途径和技术支持,并为开发其他多功能导电水凝胶材料奠定了基础。
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来源期刊
Materials Chemistry Frontiers
Materials Chemistry Frontiers Materials Science-Materials Chemistry
CiteScore
12.00
自引率
2.90%
发文量
313
期刊介绍: Materials Chemistry Frontiers focuses on the synthesis and chemistry of exciting new materials, and the development of improved fabrication techniques. Characterisation and fundamental studies that are of broad appeal are also welcome. This is the ideal home for studies of a significant nature that further the development of organic, inorganic, composite and nano-materials.
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