单电极电致发光纤维的连续制备及其可视化液体传感应用  

Continuous Preparation of Single-electrode Electroluminescent Fibers and Their Visual Liquid Sensing Applications

作　　者：杨小锐 杨伟峰 李克睿 李耀刚[1] 张青红[1] 王宏志[1] 侯成义[1] YANG Xiaorui;YANG Weifeng;LI Kerui;LI Yaogang;ZHANG Qinghong;WANG Hongzhi;HOU Chengyi(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学材料科学与工程学院,纤维材料改性国家重点实验室,上海201620

出　　处：《发光学报》2024年第7期1049-1057,共9页Chinese Journal of Luminescence

基　　金：中央高校基本科研业务费;东华大学励志计划(LZA2023001)。

摘　　要：随着柔性电子产品、智能传感器、智能穿戴等领域的兴起,柔性电致发光器件得到了蓬勃的发展。柔性电致发光纤维以其便携性、柔软性及可编织性,为可视化传感领域带来了巨大的发展潜力。但受限于其大多为双电极结构,制备工艺复杂,使其在成本、器件均匀性、灵敏性及柔软性方面仍存在不足。本文开发了一种单电极电致发光纤维,通过简单、可扩展和低成本的制造工艺,实现了电致发光纤维的连续制备。且通过无线驱动的方式实现了电致发光,单电极纤维接受无线电场能量,通过接地线与大地、无线发射源形成闭合回路,从而消除了对外部电源的依赖。单电极电致发光纤维由导电层、介质层和发光层构成,发光波长为456 nm,具有良好的力学性能、发光性能及柔软性。单电极电致发光纤维可应用于溶液的可视化传感,其发光强度对于氯化钠浓度的识别度可达到0.001%(质量分数),具有出色的灵敏度,在汗液检测及生物等方面具有重要意义。发光纤维可进一步编织成发光织物,其透气性及力学方面均与普通的商用面料相媲美,并可实现不同浓度氯化钠的可视化传感。在可穿戴设备领域,无线驱动的单电极电致发光纤维具有实现视觉显示和通信功能的巨大潜力。The advent of flexible electronics,smart sensors,and intelligent wearables has catalyzed a burgeon⁃ing interest in flexible electroluminescent devices.These devices,particularly electroluminescent fibers,are dis⁃tinguished by their portability,malleability,and integrability into textiles,offering substantial promise for ad⁃vancements in visual sensing technology.However,due to their mostly dual-electrode structure and complex fabri⁃cation process,there are still shortcomings in terms of cost,device uniformity,sensitivity,and flexibility.This paper develops a single-electrode electroluminescent fiber and achieves continuous preparation of electrolumines⁃cent fibers through a simple,scalable,and low-cost manufacturing process.Electroluminescence is achieved through wireless driving.The single-electrode fiber receives energy from the wireless radio field and forms a closed loop with the wireless transmission source through the ground wire to the earth,thus eliminating the depen⁃dence on external power sources.The single-electrode electroluminescent fiber consists of a conductive layer,a dielectric layer,and a luminescent layer,with a luminescent wavelength of 456 nm.It has good mechanical per⁃formance,luminescent performance,and flexibility.We applied it to the visualization sensing of solutions,and its luminescent intensity can achieve a recognition degree of 0. 001% (mass fraction) for sodium chloride concen⁃ tration, demonstrating excellent sensitivity and significant implications for sweat detection and biology. We fur⁃ ther weaved it into luminescent fabrics, which have comparable breathability and mechanical properties to ordi⁃ nary commercial fabrics and can achieve visual sensing of different concentrations of sodium chloride. In the do⁃ main of wearable technology, wirelessly driven single-electrode electroluminescent fibers have enormous potential to achieve visual display and communication functions.

关 键 词：智能纤维 可视化传感 连续制备 无线驱动 

分 类 号：O482.31[理学—固体物理]