Tong Ruiping, Ma Zhihui, Yao Rui, Gu Ping, Li Tengfei, Liu Linfeng, Guo Fazhan, Zeng Mingshun, Xu Junfei
Key Laboratory of Air-driven Equipment of Zhejiang Province, College of Mechanical Engineering, Quzhou University, Quzhou 324000, China.
Key Laboratory of Air-driven Equipment of Zhejiang Province, College of Mechanical Engineering, Quzhou University, Quzhou 324000, China.
Int J Biol Macromol. 2023 Aug 15;246:125667. doi: 10.1016/j.ijbiomac.2023.125667. Epub 2023 Jul 3.
Flexible and stretchable substrates based on pure natural polymers have attracted widespread attention for next-generation "green" electronics. However, fabrication of stretchable and "green" electronic sensors with integrated high stretchability, optical transmittance and good conductivity still remains tremendous challenges. Herein, alginate ionic gel films (AIGFs) with integrated high stretchability (tensile strength of 4.13 MPa and 191.1 % fracture strain) and excellent transparent properties (transparency of ∼92 %) are achieved by the glycerol inducing physical crosslinking and CaCl initiating ionic crosslinking, a simple soaking and drying strategy. The obtained gel films not only exhibit good ionic conductivity, but also high reliability, wide-range sensing, and multiple sensitivity to external stimulus. More importantly, these ionic conductive gel films as green substrates are successfully utilized for construction of flexible and patterned optoelectronic devices. This promising strategy will open up new powerful routes to construct highly stretchable, transparent, and ionic conductive substrates for multifunctional sensors and devices.
基于纯天然聚合物的柔性可拉伸基板在下一代“绿色”电子领域引起了广泛关注。然而，制造具有高拉伸性、光学透过率和良好导电性的可拉伸“绿色”电子传感器仍然面临巨大挑战。在此，通过甘油诱导物理交联和氯化钙引发离子交联这一简单的浸泡和干燥策略，制备出了具有高拉伸性（拉伸强度为4.13MPa，断裂应变达191.1%）和优异透明性能（透明度约为92%）的海藻酸盐离子凝胶薄膜（AIGFs）。所得凝胶薄膜不仅具有良好的离子导电性，还具备高可靠性、宽范围传感以及对外部刺激的多重敏感性。更重要的是，这些离子导电凝胶薄膜作为绿色基板成功用于构建柔性且有图案的光电器件。这一颇具前景的策略将为构建用于多功能传感器和器件的高可拉伸、透明且离子导电的基板开辟新的有力途径。
