| 主权项 |
1. A composition comprising a plurality of water-soluble nanoclusters ranging from 2 nm to 500 nm in diameter, each of the nanoclusters containing one or more metal cations, one or more anions, and one or more water-soluble ligands, in which the one or more metal cations are selected from the group consisting of cations of Cr, Al, Bi, Zn, Ba, Cu, Ti, Mg, Mn, Ca, Se, In, Pt, and Zr; the one or more water-soluble ligands are selected from the group consisting of xylitol, isomaltose, isomalt, sorbitol, arabinose, mannitol, and fructooligosaccharide; and the molar ratio among the one or more metal cations, the one or more anions, and the one or more water-soluble ligands is 1:0.1-9:0.1-10wherein the plurality of nanoclusters have a molecular weight ranging from 3,500 to 1,000,000 Dalton. |
