The direct intercalation of polymer molecules into inorganic hosts has proved difficult due to the dimensions of the polymers. Here, new polymer/V2O5 intercalation compounds based on the inclusion of water-soluble polymers such as polyvinylpyrrolidone, polypropyleneglycol, and methylcellulose are reported and their physical properties discussed. This approach further facilitates the production of inclusion compounds with controlled mechanical. optical, and electrical properties.