On account of the ESR and XPS results , parts of W6 + in multilayers were reduced to W5 + which exhibited characteristic blue , a possible photo - or thermochromic mechanism can be speculated .
顺磁共振和光电子能谱证实了W6+被还原为W5+而呈现多蓝的特征蓝色。这是由于多金属氧酸盐和聚电解质协同作用的结果。
w5