Ultrathin multilayer films containing a lacunary Dawson type polyoxometalates cluster K17[Ln(P2Mo17O61)2] (Ln = Eu, Tb) and PAH have been prepared by LbL method.

• 通过层接层组装技术制备了含有双缺位Dawson型杂多酸K17[Ln(P2Mo17O61)2] (Ln = Eu, Tb)与PAH的多层膜。