Hollow nanostructures offer great potential for plasmonic applications due to their strong and highly tunable localized surface plasmon resonance. The relationship between the plasmonic properties and geometry of hollow nanoparticles, such as core‐shell size ratio, concentricity of the cavity and porosity of the wall, is well documented. Nanoscale galvanic replacement provides a simple, versatile and powerful route for the preparation of such hollow structures. Here we demonstrate how the efficiency of reductant‐assisted galvanic replacement processes can be enhanced by controlling the degree of hydration and hydrolysis of the metal ion precursor using pH and pL as key control parameters (by analogy to pH, the letter p in the expression pL is used to indicate the decimal cologarithm associated with the concentration of the ligand L). Adjusting precursor speciation prior to the sacrificial template's hollowing process offers a new strategy to tune the morphology and optical properties of plasmonic hollow nanostructures.

中文翻译：

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增强等离子体中空纳米粒子的电置换：了解金属离子前体物种的作用。

中空的纳米结构由于其强大且高度可调节的局部表面等离子体共振，为等离子体应用提供了巨大的潜力。空心纳米粒子的等离子体性质和几何形状之间的关系（如核壳尺寸比，空腔的同心度和壁的孔隙率）已得到充分证明。纳米级原电池置换为制备这种空心结构提供了一种简单，通用和强大的途径。在这里我们展示了如何通过使用pH和pL作为关键控制参数来控制金属离子前体的水合和水解程度（通过类似于pH，表达式pL中的字母p来控制金属离子前体的水合和水解程度）来提高还原剂辅助的电置换过程的效率用于表示与配体L）的浓度有关的十进制对数。