Patterned nanostructures tethered on various substrates are of essential importance for both of fundamental research and practical application but often require tedious and expensive fabrication procedure. We herein report a versatile and simple strategy to grow patterned zinc oxide (ZnO) nanorods by chemical bath deposition (CBD) on arbitrary substrates. This strategy relies on the inhibitory effect of polydopamine (PDA) film on the CBD of ZnO nanorods on Fe3+ ion-activated surfaces. By patterning the adhesive PDA film via transfer-printing or UV photo-oxidation, patterned ZnO nanorods were well grown on various substrates including glass, silicon and plastic plates. The inhibition mechanism was investigated and found to be tightly associated with the unique metal coordination property of PDA film. This work demonstrates a versatile yet simple strategy to achieve patterned growth of ZnO nanostructures and discloses a new interplay between PDA and metal ions, and may shed light on the growth regulation of other inorganic nanostructures.

中文翻译：

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聚多巴胺薄膜辅助的ZnO纳米棒图案化化学浴沉积在任意衬底上

束缚在各种基材上的图案化纳米结构对于基础研究和实际应用都至关重要，但通常需要乏味且昂贵的制造程序。我们在此报告了一种通过在任意衬底上进行化学浴沉积（CBD）来生长图案化的氧化锌（ZnO）纳米棒的通用且简单的策略。该策略依赖于聚多巴胺（PDA）膜对Fe3 +离子活化表面上的ZnO纳米棒CBD的抑制作用。通过转印或紫外光氧化对PDA胶膜进行构图，可以在包括玻璃，硅和塑料板在内的各种基板上很好地生长图案化的ZnO纳米棒。研究了其抑制机理，发现其与PDA膜独特的金属配位性能紧密相关。