This work demonstrates the suitability of spinach extract as a bio-catalyser for the photo-catalysed synthesis of silver nanoparticles on polyimide and polyetherimide, and their suitability as a seed-layer for the formation of conductive micro-track after plating. The study reveals that the extract can accelerate the reaction rates of the photo-patterning process by an order of magnitude, when applied on materials for flexible electronics and 3D printing. The two main components of the extract that can act as photo-catalysers - chlorophylls and plasmatic salts - have been individually studied by energy-dispersive X-rays, UV/Vis spectroscopy and X-ray Diffraction. A simple and well-defined method for extraction of chlorophyll-A (Ch-A) from fresh spinach at 120 ± 20 mg/L, has been developed. The study reveals that the main component enhancing photoreduction rates is due to the ionic salts present in the extract. The spinach extract has been demonstrated to be a valid catalyser to achieve highly conductive, selective electroless copper plating of track features, of thickness 0.5 ± 0.2 μm and conductivity (0.7 ± 0.2) × 10⁷ S/m. 10 μm wide tracks are obtained, and the copper plating withstands the adhesion test. Demonstration of selective, ionic-liquid immersion plating of silver onto electroless copper, highlights a high quality metal protective layer finishing process desirable for reduced waste and toxicity.

这项工作证明了菠菜提取物作为生物催化剂在聚酰亚胺和聚醚酰亚胺上光催化合成银纳米粒子的适用性，以及它们作为种子层在电镀后形成导电微迹线的适用性。研究表明，将提取物应用于柔性电子和3D打印材料时，可以将光图案形成过程的反应速率提高一个数量级。提取物的两个主要成分可作为光催化剂-叶绿素和血浆盐-已分别通过能量分散X射线，UV / Vis光谱和X射线衍射进行了研究。已经开发了一种简单明了的方法，可从新鲜菠菜中以120±20 mg / L提取叶绿素A（Ch-A）。研究表明，提高光还原速率的主要成分是由于提取物中存在的离子盐。菠菜提取物已被证明是一种有效的催化剂，可实现高导电性，选择性的化学镀铜迹线，厚度仅为0.5±0.2μm，导电率（0.7±0.2）×10⁷  S / m。获得了10μm宽的走线，并且铜镀层经受了附着力测试。将银选择性镀在离子液体上的化学镀层的演示突出显示了一种高质量的金属保护层精加工工艺，可减少浪费和降低毒性。