Rhodamine 6g r6g

Copper foil (0.025mm thick, 99.8%) was commercially obtained from Alfa Aesar (Ward Hill, MA, USA). All chemicals were purchased from commercial sources and used without further purification. (3-Aminopropyl)triethoxysilane (APTMS, 95%, Acros, Geel, Belgium), resorcinol (C₆H₆O₂, 99%, Alfa Aesar, USA), ammonium hydroxide (NH₄OH, 28%, Alfa Aesar, USA), formaldehyde solution (CH₂O, 37%, Merck, Darmstadt, Germany), silver nitrate (AgNO₃, 99%, Alfa Aesar, USA), hydrochloric acid (HCl, 37%, Sigma-Aldrich, Darmstadt, Germany), rhodamine 6G (R6G, 99.8%, Acros, Germany), amoxicillin (50 mg/mL, Y F Chemical, New Taipei City, Taiwan), 5-fluorouracil (5FU, 50 mg/mL, Nang Kuang Pharmaceutical, Tainan, Taiwan), and ethanol (C₂H₅OH, 99%, Sigma-Aldrich, Darmstadt, Germany) were used in this experiments. De-ionized water with a resistivity higher than 18.2 MΩ was used for all solution preparations.

All chemicals were used as received unless otherwise noted. Dextran500 (dextran from Leuconostoc ssp., 500 kDa), Ribonuclease A (RNase) and Atto488 NHS ester were purchased from Sigma (St Louis, MO). Dextran70 (70 kDa), Dextran270 (270 kDa) and Rhodamine 6G (R6G) were purchased from Acros Organics (New Jersey).

Analytical-grade silver nitrate (AgNO₃, >99%) and Rhodamine 6G (R6G, 99%) were purchased from Alfa Aesar. Ciprofloxacin (CIP, 98%) and chloroauric acid (HAuCl4, >99%) was purchased from Macklin. Copper wires were purchased from Guan Tai Metal Materials Co., LTD. Water used throughout these experiments was purified with a Millipore system.
The morphologies and structures of Au–Ag particles were characterized using scanning electron microscopy (SEM) and energy-dispersive spectrometry (EDS, JSM-7900F). The crystalline structure was characterized by X-ray powder diffraction with a Cu Ka source (Siemens D800, Munich, Germany, λ = 0.154 nm) scanning from 20° to 90° at the rate of 2° per minute. The corresponding working voltage and current were 40 kV and 25 mA, respectively. The chemical purity of synthesized 3D Au–Ag substrate was studied by X-ray photoelectron spectroscopy (XPS).