Highly stable,stretchable,and transparent electrodes based on dualheaded Ag@Au core-sheath nanomatchsticks for non-enzymatic glucose biosensor
作者机构：School of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第1期
页 面：1558-1567页
核心收录：
学科分类：07[理学] 070205[理学-凝聚态物理] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学]
主 题：Ag@Au core-sheath nanowire stretchable transparent electrode glucose biosensor capillary force stretchable electronics
摘 要：Stretchable and transparent electrodes(STEs)based on silver nanowires(AgNWs)have garnered considerable attention due to their unique optoelectronic features.However,the low oxidation resistance of AgNWs severely limits the reliability and durability of devices based on such STEs.The present work reports a type of core-sheath silver@gold nanowires(Ag@Au NWs)with a morphology resembling dual-headed matchsticks and an average Au sheath thickness of 2.5 nm.By starting with such Ag@Au NWs,STEs with an optical transmittance of 78.7%,a haze of 13.0%,a sheet resistance of 13.5Ω·sq.−1,and a maximum tensile strain of 240%can be formed with the aid of capillary-force-induced welding.The resultant STEs exhibit exceptional oxidation resistance,high-temperature resistance,and chemical/electrochemical stability owing to the conformal and dense Au sheath.Furthermore,non-enzymatic glucose biosensors are fabricated employing the Ag@Au NW STEs.The electrocatalytic oxidation currents are proportional to glucose concentrations with a high sensitivity of 967μA·mM−1·cm−2 and a detection limit of 125μM over a detection range of 0.6 to 16 mM.Additionally,the biosensors demonstrate an appealing robustness and antiinterference characteristics,high repeatability,and great stability that make them adequate for practical use.
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