Controlled Microwave-Hydrolyzed Starch as a Stabilizer for Green Formulation of Aqueous Gold Nanoparticle Ink for Flexible Printed Electronics
| Autor: | Peter Hildebrandt, Erwin P. Enriquez, Nikita P. Bacalzo, Lance P. Go, F. T. Limpoco, Christine Joy Querebillo |
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| Rok vydání: | 2018 |
| Předmět: |
Inert
Materials science Aqueous solution Starch Sintering Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Chemical engineering chemistry Printed electronics General Materials Science Crystallite 0210 nano-technology Sheet resistance |
| Zdroj: | ACS Applied Nano Materials. 1:1247-1256 |
| ISSN: | 2574-0970 |
| DOI: | 10.1021/acsanm.7b00379 |
| Popis: | Gold electrodes are important in some devices and certain applications where an inert, highly conductive feature is required. An aqueous gold nanoparticle (AuNP) ink suitable for inkjet printing was synthesized and formulated using starch and microwave-assisted heating. By varying the hydrolysis conditions of starch, the size, yield, and stability of the AuNP suspension can be controlled and optimized to achieve a jettable ink. The optimized formulation has a very low starch loading of only 1.75 wt % relative to gold, forming a highly stable AuNP ink, which upon drying already forms a very conductive film and sinters at low temperature. The overall synthesis protocol thus provides a greener and cheaper alternative to other AuNP synthesis methods. The sintering behavior of the film was monitored, wherein, upon heating, starch is degraded, crystallite growth increased, and the morphology changed from individual nanoparticles to a network of fused particles. The film sheet resistance decreased concomitant wi... |
| Databáze: | OpenAIRE |
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