Facile Surface Modification of Ultrathin Gold Nanowires Film with Hydrogen Sulfide for Improvement of Stability
作者：Jianchun Jiang; Yongqing Zhang; Jiahang Zhou; Yizhou Jiang; Yunbo Li *
關鍵字：gold nanowires,oleylamine,electronic materials,H2S gas
論文來源：期刊
具體來源：https://onlinelibrary.wiley.com/doi/10.1002/adem.202200509
發表時間：2022年
Ultrathin gold nanowires (AuNWs) have an important role and promising
applications in areas of wearable sensors, matter detection, and
flexible transparent electronic materials. But oleylamine (OAm) ligand
on the ultrathin AuNWs surface leads to high junction resistance and the
inherent Rayleigh instability leads to decomposition into gold spheres
within a few days. To eliminate these two disadvantages, herein, the
implementation of one facile H2S gas treatment method to
improve the conductivity and stability of ultrathin AuNWs is tried. The
conductivity of AuNWs on the interdigital electrode can be improved by
4?×?107 times because the AuNWs became bent and cross-linked, due to the H2S
exchange of the ligand OAm. In addition, the conductivity of the
three-layer ultrathin AuNW film on polyethylene terephthalate (PET) can
be improved by at least 2000 times. The ultrafine structure of AuNWs can
be maintained for more than 1 week at room temperature, which
attributes to H2S that can protect the surface structure of
AuNWs. The findings highlight a new method of the ultrathin AuNWs for
exceeding improvement in electronic conduction and stability.