Polymer-templated electrodeposition of Ag nanosheets assemblies array as reproducible surface-enhanced Raman scattering substrate.

Polymer-templated electrodeposition of Ag nanosheets assemblies array as reproducible surface-enhanced Raman scattering substrate.

Journal of nanoscience and nanotechnology (2014-04-18)

Sisi Liu, Zhimou Xu, Tangyou Sun, Wenning Zhao, Xinghui Wu, Zhichao Ma, Xueming Zhang, Jian He, Cunhua Chen

ABSTRACT

Position-configurable, reproducible, vertically aligned nanosheets assemblies (ANAs) arrays are fabricated by polymer-templated electrodeposition method at room temperature. Here, nanoimprint lithography is utilized to fabricate polymer template on the fluorine-doped tin oxide substrate for the purpose of evenly tuning the location of Ag nanostructures. Subsequently, vertically aligned ANAs can be achieved at the bottom of each hole via electrodeposition in a mixed aqueous solution of AgNO3 and citric acid. To obtain uniform ANAs array, we have systematically investigated the factors that influenced the electrodeposition. It was found that the formation of uniform ANAs arrays is strongly depended on the seeding layer, citric acid concentration, electrodeposition potential and time. The as-synthesized ANAs array exhibited a remarkable SERS activity and Raman signal reproducibility to rhodamine 6G, a concentration down to 10(-13) M can be identified. Our results revealed that the ANAs array is a highly desirable candidate as the reliable enhancer for high performance SERS analysis.

MATERIALS

Product Number

Brand

Product Description

265519

Sigma-Aldrich

Silver, foil, thickness 0.025 mm, 99.9% trace metals basis

265578

Sigma-Aldrich

Silver, wire, diam. 0.25 mm, 99.9% trace metals basis

326984

Sigma-Aldrich

Silver, foil, thickness 0.25 mm, 99.9% trace metals basis

303372

Sigma-Aldrich

Silver, granular, >250 μm, 99.99% trace metals basis

267430

Sigma-Aldrich

Silver, wire, diam. 2.0 mm, ≥99.99% trace metals basis

373249

Sigma-Aldrich

Silver, evaporation slug, diam. × L 0.6 cm × 1.2 cm, 99.99% trace metals basis

327034

Sigma-Aldrich

Silver, wire, diam. 0.25 mm, ≥99.99% trace metals basis

327077

Sigma-Aldrich

Silver, flakes, 10 μm, ≥99.9% trace metals basis

327093

Sigma-Aldrich

Silver, powder, 5-8 μm, ≥99.9% trace metals basis

327085

Sigma-Aldrich

Silver, powder, 2-3.5 μm, ≥99.9% trace metals basis

348759

Sigma-Aldrich

Silver, wire, diam. 1.5 mm, ≥99.99% trace metals basis

327018

Sigma-Aldrich

Silver, wire, diam. 2.0 mm, 99.9% trace metals basis

327107

Sigma-Aldrich

Silver, powder, <45 μm, ≥99.99% trace metals basis

327026

Sigma-Aldrich

Silver, wire, diam. 0.5 mm, 99.9% trace metals basis

576832

Sigma-Aldrich

Silver, nanopowder, <100 nm particle size, contains PVP as dispersant, 99.5% trace metals basis

GF80217109

Silver, foil, not light tested, 25x25mm, thickness 0.001mm, 99.97%

GF83533215

Silver, foil, not light tested, 150x150mm, thickness 0.008mm, 99.97%

GF68633321

Silver, tube, 100mm, outside diameter 2.8mm, inside diameter 2.5mm, wall thickness 0.15mm, as drawn, 99.95+%

GF65566660

Silver, tube, 200mm, outside diameter 5.0mm, inside diameter 4.5mm, wall thickness 0.25mm, as drawn, 99.95+%

GF37379650

Silver, foil, 1m coil, thickness 0.0125mm, 99.95+%

GF57311030

Silver, foil, 15mm disks, thickness 0.02mm, 99.97%

GF12484155

Silver, foil, 1m coil, thickness 0.025mm, annealed, 99.95+%

GF96836439

Silver, foil, 15mm disks, thickness 0.1mm, annealed, 99.95+%

GF75049207

Silver, foil, 15mm disks, thickness 0.15mm, as rolled, 99.95+%

GF06315128

Silver, foil, 1m coil, thickness 0.008mm, 99.95+%

GF09387401

Silver, foil, 15mm disks, thickness 0.006mm, 99.97%

GF10948484

Silver, foil, 25mm disks, thickness 0.003mm, 99.9%

GF00601782

Silver, foil, 15mm disks, thickness 0.5mm, as rolled, 99.99+%

GF02202983

Silver, foil, 1m coil, thickness 0.025mm, as rolled, 99.95+%

GF72003787

Silver, foil, 25mm disks, thickness 0.125mm, as rolled, 99.99+%