Thin films with tunable optical properties from yellow to metallic were prepared from a monolayer coating of silver nanoparticles (AgNP) onto a polyelectrolyte multilayer (PEM) thin film. The AgNP were synthesized using various concentrations of stabilizing polyelectrolytes leading to a competitive adsorption concept in which AgNP compete with excess polyelectrolytes to coat the cationic PEM top layer. The AgNP were synthesized by chemical reduction of Ag salts using poly(styrene 4-sulfonic acid-co-maleic acid) (PSS-co-MA) as stabilizing agent to produce nanoparticles coated with both a strong acid (sulfonic) and a weak acid (carboxylic) moiety. Although all the nanoparticle solutions displayed a characteristic bright yellow due to the localized surface plasmon band around 420 nm, the monolayer films of nanoparticles obtained after dipping displayed striking different optical properties. When using a high PSS-co-MA content in the solution, a pale-yellow film was obtained which color shifted to orange and metallic when the capping concentration was decreased from 0.25 to 0.001 mM. The optical properties of the AgNP film could be further changed by galvanic replacement of the Ag with gold ions to produce a gold monolayer. These results are interesting to produce surface with tunable catalytic properties, tunable optical properties, or to be used as primer for the metallization of polymeric surfaces.

从银纳米颗粒（AgNP）的单层涂层到聚电解质多层（PEM）薄膜上，制备了具有从黄色到金属可调的光学特性的薄膜。使用各种浓度的稳定化聚电解质合成AgNP，从而形成竞争性吸附概念，其中AgNP与过量的聚电解质竞争以覆盖阳离子PEM顶层。通过使用聚（苯乙烯4-磺酸-共马来酸）（PSS-co-MA）作为稳定剂对Ag盐进行化学还原来合成AgNP，以生产同时涂有强酸（磺酸）和弱酸的纳米颗粒（羧基）部分。尽管由于420 nm附近的局部表面等离激元能带，所有纳米颗粒溶液均显示出特征性的亮黄色，浸渍后获得的纳米颗粒单层膜表现出惊人的光学性能。当溶液中使用高PSS-co-MA含量时，会获得浅黄色薄膜，当封端浓度从0.25 mM降低到0.001 mM时，颜色会变成橙色和金属色。AgNP薄膜的光学特性可以通过用金离子对Ag进行电取代来进一步改变，以产生金单层。这些结果对于产生具有可调节的催化性能，可调节的光学性能的表面或用作聚合物表面金属化的底漆是令人感兴趣的。001毫米 AgNP薄膜的光学特性可以通过用金离子对Ag进行电取代来进一步改变，以产生金单层。这些结果对于产生具有可调节的催化性能，可调节的光学性能的表面或用作聚合物表面金属化的底漆是令人感兴趣的。001毫米 AgNP薄膜的光学性能可以通过用金离子对Ag进行电取代来进一步改变，以产生金单层。这些结果对于产生具有可调节的催化性能，可调节的光学性能的表面或用作聚合物表面金属化的底漆是令人感兴趣的。