Platinum Ink Synthesis for Laser Printing

A 500 mM stock solution of ammonium iron oxalate trihydrate ((NH₄)₃[Fe(C₂O₄)₃]·3H₂O, Alfa Aesar, 98%), and a 70 mM stock solution of ammonium tetrachloroplatinate ((NH₄)₂[PtCl₄], Alfa Aesar, 99.9% metal basis) in deionized water (conductivity 16–18 MΩ) were prepared and stored in the dark at 4 °C. The platinum ink (a 1:1 mixture by volume of (NH₄)₃[Fe(C₂O₄)₃] and (NH₄)₂[PtCl₄]) stock solutions was always freshly prepared prior to the laser printing experiments.

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Yang L., Hu H., Scholz A., Feist F., Cadilha Marques G., Kraus S., Bojanowski N.M., Blasco E., Barner-Kowollik C., Aghassi-Hagmann J, & Wegener M. (2023). Laser printed microelectronics. Nature Communications, 14, 1103.

Publication 2023

Ammonium Ammonium oxalate Conductivity Iron Iron oxalate Metal Platinum Ptcl4 Tetrachloroplatinate

Corresponding Organization :

Other organizations : Karlsruhe Institute of Technology, Karlsruhe University of Education, Suzhou University of Science and Technology, University of Science and Technology of China, Heidelberg University, Queensland University of Technology

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Variable analysis

independent variables

Concentration of ammonium iron oxalate trihydrate stock solution
Concentration of ammonium tetrachloroplatinate stock solution
Volume ratio of ammonium iron oxalate trihydrate and ammonium tetrachloroplatinate stock solutions in the platinum ink

dependent variables

Not explicitly mentioned

control variables

Conductivity of deionized water used to prepare the stock solutions
Storage temperature of the stock solutions (4 °C)
Storage conditions of the stock solutions (in the dark)

controls

Positive control: Not mentioned
Negative control: Not mentioned

Annotations

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