VESICULES BASED ON ELECTROSTATIC INTERACTIONS CONTAINING METAL microparticles

摘要

1. A vesicle containing fine metal particles having a membrane formed from the first polymer according to (a) or (b) below, and the second polymer according to (c) or (d) below (provided which excludes the combination of (b) and (d)), where partial crosslinking occurs between the cationic segment of the first polymer and the anionic segment of the second polymer and where finely dispersed metal particles are localized in the vesicle membrane: first polymer: (a) block copolymer (I), having an electrically uncharged hydrophilic segment and a cation n segment, (b) amino acid polymer (I) having a cationic segment; second polymer: (c) block copolymer (II) having an electrically uncharged hydrophilic segment and an anion segment, (d) amino acid polymer (II) having an anion segment .2. The vesicle of claim 1, wherein the membrane has a three-layer structure consisting of an outer layer, an intermediate layer and an inner layer, where each of the outer layer and the inner layer consists of an electrically uncharged hydrophilic segment, and the intermediate layer consists of a cationic segment and an anion segment. . The vesicle according to claim 1 or 2, wherein the electrically uncharged hydrophilic segment is polyethylene glycol. 4. The vesicle according to claim 1 or 2, wherein the metal in the fine metal particles is one or more selected from the group consisting of gold, silver, platinum, copper, nickel, palladium, iridium and rhodium. 5. The vesicle according to claim 1 or 2, where the finely dispersed metal particles are in the form of a sphere or rod. The vesicle according to claim 1 or 2, where the cationic segment is represented by the following formula (1):, where R represents a hydrogen atom, an acetyl group, a trifluoroacetyl group, an acryloyl group, or