The visible‐light photochromic composite films with a fast response were prepared by entrapping H4PMo11VO40 into polyvinylpyrrolidone (PVP) networks. PMo11V/PVP composite films’ structure and morphology were characterized by IR spectroscopy, XRD and TEM. The skeleton structure of PMo11V and PVP were still remained through IR spectroscopy analysis. The photochromism performance of PMo11V/PVP composite films were analyzed by UV‐vis absorption. The photochromic process showed a first‐order kinetics. Meanwhile, the mechanism of photochromism composite films was investigated by XPS. PMo11V/PVP composite films with excellent circulation ability of rising‐fading color which has good application potential.

中文翻译：

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基于聚乙烯吡咯烷酮的多金属氧酸盐 H4PMo11VO40 复合薄膜的可见光光致变色快速响应

通过捕获H制备了具有快速响应的可见光光致变色复合薄膜4聚钼11视氧浓度40进入聚乙烯吡咯烷酮（PVP）网络。聚钼11采用红外光谱、X射线衍射和透射电镜对V/PVP复合薄膜的结构和形貌进行了表征。 PMo的骨架结构11经红外光谱分析，仍残留有V和PVP。 PMo的光致变色性能11通过紫外可见吸收分析 V/PVP 复合膜。光致变色过程表现出一级动力学。同时，通过XPS研究了复合薄膜的光致变色机理。聚钼11V/PVP复合薄膜具有优异的升褪色循环能力，具有良好的应用潜力。