Abstract
Two kinds of polyphosphine polyoxides were synthesized. The 1st one has ether bridge, and the 2nd one shows PCP linkage. Complexation properties of these compds. towards minor actinides (Np, Pu and Am) were evaluated from liq.-liq. extn. and from transport by supported liq. membranes. In decorporation expt., some of the synthesized phosphonates exhibit in vivo good uranyl or Np complexation properties.