| 초록 |
Various organic ligand-stabilized Ag nanomaterials have been used to prepare flexible electrodes, but the obtained electrodes exhibited a restricted conductivity due to the remaining ligands, requiring subsequent sintering processes to improve conductivity. Herein, we report a totally different method of preparing flexible electrodes using the room-temperature metallic fusion layer-by-layer assembly. The synthesized tetraoctylammonium thiosulfate (TOAS) stabilized-Ag NPs were deposited through a perfect ligand exchange between bulky TOAS ligands and small molecules, tris(2-aminoethyl)amine (TAA). The small TAA linkers bridging neighboring Ag NPs dramatically shortened the interparticle distance, inducing metallic fusion at room temperature. The prepared electrodes showed an extremely high electrical conductivity of 1.60 × 105 S cm−1 (bulk Ag ~ 6.30 × 105 S cm−1). Moreover, the insulating papers can be transformed into metallic papers with large surface area through our approach. |
