Gold nanostructures are known for their unique electro-optical behavior called surface plasmon resonance. Their chemically stable and biocompatible properties are being utilized in a vast area of applications. Within this work, gold snowflake-like particles (Au SFLPs) were prepared via chemical reduction in an aqueous bulk phase assisted by monovalent and divalent inorganic salts. The addition of inorganic salts in combination with a particular concentration ratio between chemical reduction precursors plays a key role in the Au SFLPs size, surface morphology and shape evolution. The reaction parameters, such as reaction temperature, pH, stirring speed, concentrations of reactants and their types, influencing shape development of Au SFLPs, were systematically tested and described. The theory of growth and aggregation of gold seeds and the diffusion within the electric double layer – surrounding the particles, is used to propose a controlled mechanism, explaining the organization of gold atoms into Au SFLPs. A novel efficient trapping method was developed to efficiently collect individual Au SFLPs without surface structure destruction. Enhanced electro-optical behavior of the Au SFLPs, resulting from the nanostructured surface, was confirmed by the detection of 5,10,15,20-Tetrakis(1-methyl-4-pyridinio)porphyrin via surface-enhanced Raman spectroscopy (SERS).

金纳米结构因其独特的电光行为而闻名，称为表面等离振子共振。它们的化学稳定性和生物相容性已被广泛应用。在这项工作中，通过在单价和二价无机盐的辅助下，在水相本体相中进行化学还原，制备了金雪花状颗粒（Au SFLP）。无机盐的结合以及化学还原前体之间的特定浓度比对Au SFLP的尺寸，表面形态和形状演变起着关键作用。系统地测试和描述了反应参数，例如反应温度，pH，搅拌速度，反应物的浓度及其类型，影响了Au SFLPs的形貌发展。金种子的生长和聚集以及围绕颗粒的双电层中的扩散的理论被用来提出一种受控机制，解释了金原子向Au SFLPs的组织。开发了一种新颖的有效捕集方法，可以有效地收集单个Au SFLP，而不会破坏表面结构。通过表面增强拉曼光谱法（SERS）检测5、10、15、20-四（1-甲基-4-吡啶基）卟啉证实了纳米结构表面提高了Au SFLP的电光性能。开发了一种新颖的有效捕集方法，可以有效地收集单个Au SFLP，而不会破坏表面结构。通过表面增强拉曼光谱法（SERS）检测5、10、15、20-四（1-甲基-4-吡啶基）卟啉证实了纳米结构表面提高了Au SFLP的电光性能。开发了一种新颖的有效捕集方法，可以有效地收集单个Au SFLP，而不会破坏表面结构。通过表面增强拉曼光谱法（SERS）检测5、10、15、20-四（1-甲基-4-吡啶基）卟啉证实了纳米结构表面提高了Au SFLP的电光性能。